Honestly, this time of the year its not quite worth it. After August, the trout REALLY taper off, due to the res. being overfished

Also, its not a great bass fishery to begin with. sure theyre in there, but not enough to really have a great day. you might get 1 or 2 trout for a day out there and btwn 0-1 bass.. I'd suggest going to ollalla res, out by toledo.
But, if youre goin out to big creek anyway, the best rig for the trout is a 1/4 oz egg sinker, above a barrel swivel, between 3'-4' leader, around 6-8# test, with a size 8 baitholder hook, and TWO pieces of chartreusse powerbait magnum floating balls.
Ive limited out in as little as 1 hr there on that setup during june, and it'll catch fish all the way through winter.
For the bass, the best way I've found is simply a 1/4 oz white curltail jig.
Trout can range from 6-7inches, all the way up to 30 or more
bass can get up to a couple lbs, if youre lucky.
Hope this helped, and good luck