Only put a fogger on a stock 235 if your boat is floating away and you need an anchor. Even a 30hp shot will create a lean condition that may be enough to weld the pistons to the block once and for all, if it doesn't send the intake into orbit first.
Seriously, if you were to take this thing down to the block and rebuild it with all race technology, I would still say be careful with nitrous oxide. There's a reason you see multiple fuel lines and pressure release valves on racecars.
