Wyatt,

I installed the Hobie Bob on my 18 a couple of years back. I found that the rivets cracked the comptip material when you squeeze them to install the bob. I know that a capsize at any speed would break the bob right off. I ended up glassing mine in (the rod, that is) so that it is installed permanently. Of course you cannot take the rod off and I am sure it is not class legal, but in my case I don't care.