Bimini for H22. My first boat was a Helson 22 and I had purchased a new bimini for it and sold the boat a year later. Not wanting to part with the new bimini I made it work on my H22 even though it was oversized. I measured the height of the bimini and marked that height on the backstay from a guessed attachment point on the deck that would make it level and be just behind the end of the boom. I then measured from the boom to the backstay, minus 1 inch. I also measured the offset of the backstay at the height of the bimini. I then measured and put a grommet through the bimini at that point and run my backstay through it. The bimini is oversized and covers my transom and motor. It was also a little wide but I bent it in which made it a little stiffer. The only issue is, when I want to close it it has to fold up and be held up by the backstay. I also cut one side of the cover at the backstay point and added another zipper. Personally, I like the oversized bimini. When I want to trailer the boat the Bimini drops down with the back-stay when I lower the boom. I leave it attached and tie it down to the toe-rail with a bungee.