SAM: I have both on my 5.5SL, as you may remember. Both have their place on the boat just not to be used at the same time. The elastic system like you have on your Hobie 17 won't work on a Nacra rotator arm. Your 17 rotator arm faces aft, Nacra rotator faces forward. AND, the Nacra hardrware is a lot harder to rotate than your 17 mast. Elastic just won't do the job.

PS: The new boat SCREAMS, I know why all the 5.5's killed my 17 on the circuit last year, they probably weren't even working hard.

CARY