I've been running them for years. Decades actually. What do you want to know ? I have both 2, and 4 strokes. If the gravel is wet, I can go.
Just a few things.
Weight is a killer in any attempt to plane and more so in jets. Any sort of chart or data I could read to figure boat size to hp? Bat out of Atlanta speed has never been top priority in my boats but fast enough to plane with any reasonable load with enough reserve to get out of the way has always been my safety margin.
I figure a 14-16 moderately wide modv jon hull is what I'm comfortable with but I really know nothing of tunnels. I think I've got the gist of it where a slight dead rise with well designed tunnel sheers of air to provide a clean sheet of solid water. Nor do I fully understand sponson design other than it helps get the arse end up with material missing in the tunnel. Should they be an extension of the hull bottom/sides or slightly above and inside to minimize drag?
On motors, count me in the 2 stroke camp. Specifically OMC 2 strokes as I spent many hours wrenching on them to understand them. But the tree huggers have all but done away with them and anything late model has electrical gremlins all over them. I know the foot is a fairly straight forward swap but wonder if aftermarket swaps are counted at the powerhead or foot as far as regulation and restricted waters. Probably moot for me as the only real restriction I might face is a 25hp on just a couple lakes and I doubt 25 would push the weight I'm thinking. I could always do a kicker. The coast guard plate might matter if I go big.
The rest is just general inside layout which in my ideal rig regardless of propulsion is as open as possible with minimal decks forward and aft as catfishing and running lines is best done from inside the boat not on top of the boat. Center console forward is my preference.
At this point it's just spitballing but could be a future project.