Howdy! I'm swinging a 21 pitch 3-blade. I'll have to check dia. I usually run with my wife and daughter or me and a stout friend. Usually about 400-450 lbs. with a full 44 gal tank. Moved my batteries under the console and put a Todd mini pedestal mount leaning post.
My bow doesn't skyrocket, but tabs would certainly help. I'm getting 41 mph @ 5800 rpms trimmed out. My mechanic told me not to let it go over 6000, so, I don't. Can't remember rpms at cruise, but then, I'm all over the place. I like to go fast, when conditions allow. When it's choopy, I just cruise at whatever is the smoothest.