Yea i do recall that. Threw me off it being on a different post. That question was for the prop hight, this is more of what prop is best. I'm restoring an old boat with about no marine experience so i have many different questions on different specific topics. It's been a learning experience
The real answer to proper prop height has to do with numerous things and usually has to be "tweaked" to get optimum performance.
Normally boat mfgrs. setup their transom for 15, 20, 0r 25" skeg lengths on the outboards which will be attached. Considering that your hull shape at the transom will help determine exactly how close those numbers come.
Then what you expect to do with the boat comes into play in that light fast hulls run the prop higher and the more work the engine is expected to perform the better it does lower on the transom....doesn't want to ventilate....suck surface air on the hole shot....getting up on plane. Along those lines is the type and pitch of the selected propeller...smaller diameter-higher pitched for light and fast and larger diameter, less pitch, maybe an extra blade for good loads or cruising with the boat full of folks on a Sunday afternoon running just above planing speed, and or water toy pulling and the boat load of folks.
