Upon the suggestion of a few people here, I put a 12.25 x 3.75 apc prop on my .46 trainer. It now hovers! It is too big for the standard 2.75in. spinner, so I need one that would fit it. I can just take the prop with me to my lhs, but I thought I would ask first too.

BTW, you gotta try one of these props if you haven't. The plane will climb fully vertical as soon as I leave the runway! Only problem is that the throttle cut is not as effective since that massive prop wants to keep rotating, oh well!