You are one bad dude ... I used to jet ski and that was the term for bubbles forming underwater! Hahahaha ... okay I am not nuclear scientist, hehehehe ... heck I am a layman. Of course if I wanted good performance it would have been the OS50SX or a nice little Rossi ... those babies can really turn a prop fast. Again the difference in cost between the OS46 and SC 46 on my end is great, the SC 46is like 60% of the price of the OS 46FX. That is the vast difference in cost compared to 1,000 RPM lower performance. Anyways, I am just in it for the hobby. Not for unlimited verticals! Hehehehe ...