Just got back from the boat -launched yesterday - and the prop is still on! Thanks for that Tranona, and thanks also to everyone else's too.

For the benefit of "sympathetic skipper Stu" the reason I AM messing around with props is that the YARD failed to get the prop off after several attempts over a 3 week period &, having tried everything else, suggested I cut it off - which I did very carefully with an angle grinder. My spare fixed prop fit perfectly & I used a locking washer, nut & cone anode (all blue loctited). That should do until we decide on a replacement folding prop.

Cheers & thanks for your help.