For what it's worth...90% of my capsizes has to be the boom hooking my life jacket in heavier winds, when tacking. I've got a bunch of Velcro strips, that for the most part work, unless something snags... oops... yeah...I was thirsty!
I also use duct tape mainsheet hangers like L&VW's, but I use black Gorilla tape as it is more waterproof and lasts several seasons before needing to be replaced. Install two of them spaced between the two blocks to keep the mainsheet close to the boom (and off the back of my PFD when tacking.)
I like the duck tape idea except might want to put a piece of aluminum or ss tube thru where sheet runs on tape. tube might be slightly flared both ends
For what it's worth...90% of my capsizes has to be the boom hooking my life jacket in heavier winds, when tacking. I've got a bunch of Velcro strips, that for the most part work, unless something snags... oops... yeah...I was thirsty!
I had same problem and fixed it with tiewraps and also adjusting boom and gaff to lift boom higher and give a bit more head room. Now I have to concentrate on a smoother tacking procedure to make sure I do not loose the tiller when changing hands behind my back