Check out the bracket idea shown on
http://www.thebeachcats.com Technical Photo Gallery.
http://www.thebeachcats.com/index.php?module=pictures&g2_itemId=34617The Baby-Bob and the Mama-Bob have the same mount-bracket on the float.
Without a comp tip this solution works great. I’ve had done this install when I first got my H-18. With the bolted on brackets, I can quickly remove the “Bob” from the mast by removing two attachment bolts and leave the angle brackets attached to the top of the mast.
I’ve gotten over the fear of tipping the H-18 and no longer use the Baby-Bob but the angle brackets are still attached to the top on my mast.