Yak Blue, I have been fishing that river for many years and am very familiar with the area. I fish it mainly for crappie. I'll try to help you all I can. You are picking an excellent time for crappie on the river. I use jigs only and fish laydowns, brush tops, and deeper boatdocks. Fish outside or the end of layed down treetops. I mainly use a 10-12 ft. jigging pole 10-12 ft. deep and sometimes an ultralight casting Pan assassins (electric chicken, baby shad, or B-52 colors). Sometimes they will chase them and not hit a still jig. Sandies will anything white, chrome rattletraps with a black back)
The water is low so that pond is very low, but you are OK with a kayak. You can launch it there and its a short distance to the river. Alot of times you can do very well between the park and bridge. Just remember you have to fish slow. Be patient and I wouldn't be too concerned about consuming the fish. I think its mainly for big bass. I would save my money one the gps. It's not needed at all. Good luck and I might see you there.