$10 dollar gripper from cabelas's.   it has my vote.  the good old boy who came up with it (somewhere down south) obviously lipped alot of cats with it before he marketed it.  i think its an efficient design, it floats...and its cheap!  its worked well for me (i prefer to keep the beasts OUT of the canoe.  sure...it has kmart written all over it (appearances), but it works!  hell, save the $110 of what yould shell out for a Boga and spend it on more important stuff!  like .....qty.3,  2 piece berkley lightening rods....perhaps?  oh yeah....thats just cheap old me talking....i somehow still manage to trip with an antiquated, monsterously heavy, old town penobscot, 16 ft., 58 unGodly pounds!   how could i possibly do the bw without kevlar?  somehow i do. (a jab)
:)  Jan