For what ever,
I choose a Martec folding prop with streamlined tips to get that extra
1/2 knt while sailing.
It proved to be better Prop than my fixed Prop in every way accept for
the prop walk in backing, It became my primary Prop and the Fixed my
spare.
I choose a Martec Folder because of the simplicity.
http://community.webtv.net/tassail/ThomJazz