OK. I am motivated. I need to heave-to more! I am going to make a list in my log book. It will start with 5 kt, and go up to 35 kt by 5 kt increments. I am going to try to heave-to in as many conditions as possible next season, making note of what configuration worked.
Yours will probably heave to about the same as ours does (CD27).
I've found it pretty easy in our boat, we basically go from a close haul and tack, but let the main out and don't tack the jib. We heave to before cranking up our motor and dropping the sails, so we do it a fair bit, I've never had an issue with it in our boat.
I have never tried with the main alone. It would be nice if it worked though, that'd be an easy way to make headsail changes. I'll try it next time we go out and see how it does.