I use a fender as mast float, here is a picture (find Wally, then up and left)
https://www.thebeachcats.…ictures?g2_itemId=112852
On top I used a small shackle, drilled a hole on the plates of the halyard pulley. At the bottom just an eye strap with lots of silicone, not to make the cure worse than the disease (re applied every year).