Take from someone who has raced yachts offshore for over 20 years - nothing sticks to the deck of a boat like a pair of Dunlop Volleys!
If you are after ultimate grip in tough conditions go the volleys. Yes they look a bit prepy, Yes they stink after a few outings and Yes they get wet, but they truly stick like %*$# to a blanket....and hey they only cost about $12.
If you cant live with any of the down sides, go the crocs.....just remember to replace them before the soles wear out - they get really slippery then!