Which Anchor ?

Here are the two I use most.
 After looking, I see the cam is labeled as a 1 1/2" flexi-fit.

found this while looking for something else related to our madness.....guy is a bit opinionated if ya ask me, but then he's an ex cop... anyways, toward the bottom of the page he has directions on how to anchor a yak "properly"...oh forgot to mention it's geared mainly to the divers among us. 

http://topkayaker.net/Articles/FishDive/KayakDiving5.html