I just redid a 12 foot jon boat and was trying to decide between an 8hp 4hp or 50lb thrust trolling motor. Any expert opinion?

What kind of waters will you be fishing ? Rivers, ponds, lakes ?

I have a 12' jon boat. For electric only lakes, I use a 56# thrust bow mount and a 55# thrust transom mount. For HP limited lakes, I remove the transom mount electric and put on a 9.9HP gas engine.

I also have a 12 footer with a 5hp outboard and it runs around 10 - 12 MPH with 2 people but I would much rather have an 8 - 10 hp outboard on it anyday.

Thanks I was looking at a1996 mercury 9.9 hp outboard for $300. I want to use it to fish the coves of lake Murray which are pretty big but I want to be able to get to the backs of them so I will definately get some kind of trolling motor to go along with it.

9.9 HP

No less than a 25hp and a good life jacket and maybe a helmet.........