I like to fish a small river here close to home Two or three times a year. We use a 4 wheeler to launch a small 14 foot Jon and 9.9 motor off a sand bar we have private access to. We are limited to a small stretch of river and buy July in gets pretty shallow in places. My question is, If I buy a jet drive out board say a 25 or 30 hp. can I put it on any Jon boat or does it need a tunnel. I have connections with a guy who welds aluminum, so if the transom needs beefed up or raised I can take care of that. I would just like to spend a little more time on this small river with out bending up props. I have kinda been looking around for a plain Jon already set up with a jet but you just don't see them around here. I have been told that there is to much sand they won't last. Just fishing for info Thanks!