Yes, you may want to go Thurs to Av if possible. Still fairly full towards the latter part of the week and weekend. Back side TH has been the usual quiet.
My two brothers and I all worked on the boats when we were younger. My youngest brother did the long range trips out of SD for awhile. Hard work, long days, but the hours on the water and things we saw were worth it. Well, except for the sun damage to our skin.