Continued beating out west sparring with a number of boats on cross tacks – Samantha being main one. Wind developing and creeping nearer 20k so elected to change down to #3. Skip wrong footed on a port/starboard, tacked back and ended up taking us to Shingles without time to complete manoeuvre, at same time as mainsheet track over-rode line and jammed. Bit of scrappy sorting out which ended up with us well into lumpy Shingles swell. Got back into groove and once past Needles continued with battle plan of coast-hugging. Majority of fleet went out so was soon well split.