Going to try my luck today

Gonna try my luck at smith and bybee today after work. Hopefully hook a nice carp or maybe some crappie.

Didn't go so well. It was really shallow. Ended up floating over a log. I could feel the kayak roll over it. Then all of a sudden the fishfinder started getting bad signals. Glance back at the transducer and you could see where it flexed the epoxy and got air underneath it. Anyone? I have heard you can use a heat gun to warm the epoxy enough to wiggle it out or even reset it again?

Didn't go so well. It was really shallow. Ended up floating over a log. I could feel the kayak roll over it. Then all of a sudden the fishfinder started getting bad signals. Glance back at the transducer and you could see where it flexed the epoxy and got air underneath it. Anyone? I have heard you can use a heat gun to warm the epoxy enough to wiggle it out or even reset it again?

I doubt you can "warm" the epoxy up to put it back in place.  If you'd used a hot glue gun, then yes definitely an option.  Anything that "cures"; like epoxy or silicone won't likely be re-set-able.  Peel it out/off and start from scratch.