I have a Prather and your so right, what a blast.
It looks like an offshore boat running in 30 footers at scale. Jumping back and forth across the wake of the boat is very cool. WHEN you stuff it and have the the right crew, we can recover, pull the plug, drain all water, oil, and have it running again in less than 10 minutes every time. The only problem is you can only sink it 5-6 time a day before the miosture build in the radio controls and it starts shorting. Nothing a night on the mantle dosnt fix.
One strong word of advise, there are more upgrades for these little motors than are for the Merc HP500. Dont do it! Its very tempting when you see all the custom exhausts, carbs, ect. but they are far too finiky to be fun.