in a 30 ft islander-- yipes. out farther than 60 miles for loss of the prevailing chop, but ye have a southbound current to fight. i would try way off shore if i could, but i dunno with the islander--was 2 weeks for a 45 ft steelie in 1996.....with engine problems.....i would consider giving that much time, as it always takes longer than you think. take lots of water ...watch your weather closely.