Hey Author???- I am now turning a 16/15 old ragged spare wheel- the 4 blade was a dog for sure and i would be happy to sell it to any interested party
I am going to by a 16-17 soon and that is what i plan on running- no cup- your wheel sounds fine (the 3 blade) make sure your rpms max out in the 42-4800 range and you should be fine- With lite fuel and the 3 blade i am burning 9 gph and getting 20 to 23 knots depending on tide/fuel etc with 2 people. hope this helps-