No, you dont want to remove any prop material. These spin and way too high RPM's to
be messing with the structure of a prop. MAS is fine but at higher RPM's they tend to flex,
APC is a better prop all the way around. I have used both and APC also seems to be a
quieter prop. But this is my opinion. Go with the prop nut, like elenasgrumpy said it is
much much easier to change a prop with the prop nut. I wouldnt spend much money on
a Tru-Turn for a trainer.

Speaking of Tru-Turn they are very light, the adapter and the spinner probably weigh just
slightly more or equal to a plastic spinner. On Towers web site they tell you what adapter you
need for your motor.

The prop nut from Du-Bro shaped like a spinner is a good choice, and like somebody else
said still has the shape of spinner for looks. Good Luck.