text: Great question!  I wrestled with this many years ago!\n\nThere's a clear break-point around 30ft, having to do with the average wave-length in normal weather in the U.s. littoral, where I assume you reside.\n\nThen you decide your tolerance for chop!  If you ant on average, less discomfort, go bigger (and pay the resultant freight!. Otherwise, pay less and, on average, put-up with the chop!\n\nAs they say - take your choice and pay the piper!\n\nBut enjoy!  Aside from flying - sailing is the ultimate pleasure in getting from A to B -assuming you have a lot of time to spare in both endeavors!