You can wing just about anything across most rivers with the correct reel/rod. Take for instance this set up. I am using the Okuma Inspira reel on a Okuma celilo 9.5 ft rod, and I am flinging west coast small float, First cast Micro jigs, and also the matching weight for the micros across the east fork of the lewis, and also most the way across Northfork Lewis. The line I am using is 15 lb tuffline xp. I think if the reel is performing correctly and you have the correct wieght ratios you should have no problem. Also the other reel that I have seen really wing bobber setups is the Shimano Curado paired with a 1 oz weighted bobber from Danielson. If you go down to the river and see people bobber fishing....8 out of ten people will probably be using the Shimano Curado (if the've been at it awhile.) Thats my two cents.
the other two cents is this: how are you casting? watch where you let go of the line as well as where your weight is when you are casting (dependant on baitcaster or spinreel)