Roy, I'd just make sure your tractor's hydraulic gpm is at the high range of snowblower spec, not the low end.
I went white water rafting 30 years ago on the Cheat River. Guided group, lots of spotters, exciting and more.
I was a 1 and 2 guy, those 3's involved sheer drops over little waterfalls and that was a little too exciting for me.
Nobody who went with an organized group was hurt, but some sad tales of individual tubers and kayakers not coming home.
Definitely a sport to go with a buddy. The hydraulics after a waterfall used to make my eyes go wide, and guys would intentionally go in
them upside down and then flip back up. I didn't even want to watch.
there's an old saying in the fire service about not letting some one else's emergency become yours. Meaning always safety first.
I'm a decent swimmer and i sure wouldn't go into a whirlpool to rescue someone. I'd find a rope or a branch or a paddle or something.
So many stories of rescuer drowning in the attempt. Have to think twice before let's roll instinct, or let's swim..., kicks in.
that's why having spotters with the right equipment is the only safe way to go on these recreational rivers. Doesn't take long to drown.