Mary and I had one and loved it. Lots of speed and lots of fun. It had the same rating as the Hobie 18 at the time on DPN.
There was only one National Championship. We had three boats and with a great team aboard, Enrique Rodriguez, Larry Mondragon, et al we won every race with an older style boat that had only one daggerboard (a short one at that). The later models had two boards. (Note: MacGregor stopped making them and destroyed the molds -- this was his only multihull design that I have ever heard of. He is one hell of a great designer of monohulls, but he must have felt this was a Red R on his chest)
Usually raced in Biscayne Bay and my nemises was a Condor 40. They would stomp us upwind (my short single board being the culprit) and we would stomp them downwind. All very close racing.
Then I bought a nice deep daggerboard from an F40, and we won all points of sail.
On the rig, it is stayed from the stern on each side and consequently you could not have a fully battened mainsail. Well, you could if you used running backstays, but I felt that might be a bit too much trouble.
Besides, it was a masthead rig, so your predominant sail was the Genoa, not the main as in fractional sloops.
OK, say you did want to make the mast rotating. Why, the mast had no shape. To be effective you would need to replace the mast with a wing-shaped type as most beach cats have. In other words the major axis must be pretty long and minor axis pretty narrow. Otherwise, there would be no benefits. Rotating an almost square mast would do no good.
You probably have a rare Mac36 by the way. Most of them I have seen were converted to cruising boats, by building solid decks, adding dog houses, salons, etc. All of which makes them heavy and not very good sailing boats.
My other beef with the boat was the rudder system. Much would have preferred a kickup rudder system. I did touch bottom a couple of times with the rudder and bent the steering shaft. It was aluminum and bent back, but I am sure it weakend it tremendously.
At any rate, we had a lot of fun with it. By the way, it supposedly slept 8. HaHa! Sort of like a 4-man rubber boat. another HaHa! It had bunks forward and aft on each side, and were wider than a single bunk, but somewhat shy of a bed for two. Newlyweds would do fine.
