19.39SP Competition Lace Up Trapeze HookMore classes are introducing rules that allow sailors to pump in certain or all conditions which put much higher loadings through the boat and its equipment. Classes such as the 470 have been doing this for some time but it was only a couple of years ago that boats such as the 29er have been allowed to physically pump in certain wind conditions to propel the boat through the water. The crew is typically the one that pumps the most as they are