So... after about 4.5 hours testing this weekend on my boat, I got PTP set nicely and found that a Tempest is just to fickle on my 1997 Triton TR21. One plug it won't get up. Half a plug it blows out at nose over right as it planes out. No plugs I blow out at will. 2 half plugs and it won't get up.
Dropped a 25 Fury 4 blade on it and it hops up out of the hole. I didn't have a chance to check top end as it started to rain. I did see 62 and climbing.
So... I'm confident that the 25 Fury 4 is my animal.
They appear hard to find right now. Is there another prop out there that is a copy of that prop that I can look for?