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Trying to understand jet divers ??

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7.6K views 15 replies 13 participants last post by  Kirkll  
#1 ·
Lührs Jensen makes them and I have tried them off and on for years but can't really understand how to make them work for me to catch king salmon.Normally I back bounce K16 plugs. Sometimes K15. Mostly K16. So I'm fishing in say 14 to 16 foot of water. Keeping the rods throbbing in the zone with 80 ft of line out. I figure I'm running just off the bottom. Kings see up and forward so I'm good and I catch fish like this just fine . Then I move to some 20 ft water I let out a little more line say 90 feet to change the scope of the line and go deeper sometimes 100 ft rarely more than that. I catch fish. But what could / would a 10 or 20 ft jet diver do for me that's not already happening . I'm trying to understand this all. So I can even catch more fish??
 
#3 · (Edited)
If I understand what you described above as your process without divers what the diver will do for you is get you down much faster a lot less scope. Theoretically in a hookup situation that would mean less time fighting the fish and less chances of loosing the fish. That said you also have to account for the extra drag the diver creates which can be challenging at times. When I fish divers and plugs the game plan is to whip the fish as fast as possible and avoid the dreaded top water head thrashing at all costs.
 
#4 ·
Dropper lengths, amount of line out and leader lengths are key. to short of a dropper will not allow quik to properly work as the lure will be pulled into the bottom. Making Quiks work with divers require the right amount of line out, right leader length and proper length of dropper line for water depth you are fishing in.

Example, if I am fishing 30 Ft. of water, I am out 65 to 70 Ft with line using a 24" dropper to diver and a 50 to 60" leader. In shallower water, I put out less line.
 
#5 ·
Where I've seen them excel is when the wind blows against the falling current while anchored. The stern of the boat starts to wobble back and forth, dragging lines side to side behind. Using a lead dropper, there come snags and hitches in the traverse, using a diver, things stay cleaner, weave easier extending your effectiveness on anchor longer through one of the best portions of the tide.

CW
 
#6 ·
Run thin diameter line in which you may already do. Jet divers are awesome in the current but you need steady current near the bottom to. If lacking current near bottom you are better off back bouncing. Your jet divers should occasionally hit the bottom and most of my fish catchers from Bonniville have a beat up lip. It should be even across the lip to. Also I use a black permanent marker to mark lip and check to
make sure I am getting near bottom. This may not be the answer but I fish em exclusively in the Fall. Although I did try pro trolls this last year. Also I find I have way more success with a K 16 behind divers. I run lots of k15s but the k 16's always and I repeat always outfish the 15's. why. ???I'm assuming they just like my fishy k16's better. On anchor with lead my 15's produce more. Derrick


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#7 · (Edited)
I think you're doing it right. In shallow water, I've found I generally don't need or want a diver. I get more hits without it, and of course, it's nice to be able to fight the fish without fighting the diver.

Somewhere in the 15-20 foot range and deeper is where I starting using a diver, because that's the depth range where using a diver gets me more hits. Some kinds of plugs dive deeper than others and as you mentioned you also have some control based on how much line you have out. So there's not an exact number where I switch to divers, but it's generally in the 15-20 foot range where it starts helping me get hits. Sometimes when running 4 rods, I'll flatline the two farthest back lines and use divers on the two shorter lines.

Over 30 feet I get more hits on the downriggers than the divers. The problem with downriggers is that as you backtroll, you have to be cognizant of the water depth vs. how far down you are, so you don't hang up your downrigger ball. So it takes more attention, plus it's also just generally more hassle. But like flatlining, you get to fight the fish and not the diver.

So they all have their place. I like to flatline in water under about 15-20 feet. Diver in water from 15-20 down to about 30ish. Downrigger in water deeper than 30. The diver is the most brainless because I can use it at any depth and pretty much ignore it. But to get the most hits, I've found flatlining is more effective in shallow water and the rigger is more effective in deep water.
 
#11 ·
1 thing ive noticed is it also works with current and dives more or less depending on current /bktrolling speed. Say your in fast current bktrolling with an outgoing. Your moving fast and diver is working properly then you encounter a eddie where current slows alittle.boom a suspensed fish hits cause diver lifted your kwik slightly off bottom.
 
#12 ·
Jet divers in the river are pretty much brainless. Besides choosing the right size, they require only two things to work..... 1) enough "push" in terms of current / troll speed to make the lip "bite", and 2) sufficient leash to allow the diver to reach its intended depth. As pointed out in the tech tip sheet, its better to have more diver than the depth you need to reach. A #10 diver won't reach 15 feet, but a 20, 30 , 40 or 50 will. I've successfully used Jumbo Jet divers (size 50) in water from 5 ft to 30 ft in forward trolling, backtrolling, and anchored applications.

In a river setting, it will take the gear down until the diver finds that soft spot close to the bottom where there is no longer enough current to make it dive ANY deeper.... regardless of how much extra leash you give the diver. The diver is continually seeking that "seam" between shallower fast water and the dead water right next to the bottom. With enough leash, the diver is self adjusting... automatically diving deeper as the bottom slowly drops away.... or shallower as the bottom slowly comes up. Abrupt changes in bottom depth are a little less automatic.

Soft spots will cause the diver to float up until it catches enough current to force it back down. This can be an advantage and disadvantage. Small amounts of vertical variation can help trigger a strike, but trying to use a diver in a really boily salmon hole with lots of chaotic upwelling and downwelling is an exercise in futility. The gear just never stays in the zone for long