Thread: What outboard to put on a dighy

I'm looking to put an out board on my duck shooting dinghy for a bit of fun. normally an easy decision and I'd look to use a shaft outboard.
but I'm also keen to use it on some of the hawkes bay gravel rivers when they have some water in them. This is not generally suitable for outboards.

Any suggestions at what I could look to put on the dinghy?