If it were only about the sailing, of course, you go back.

However, life just can't be that simple, can it? You have to weigh all the work-related stuff. The basic rule of thumb is "Never go back." I'm not in HR, but the basic idea is, once you leave, they look at you differently, there are trust issues, etc.

Of course, for every rule there are plenty of exceptions. Assuming you have a great relationship and working environment at the old place, they're paying for you to move back, there's future opportunity for growth, healthy company, etc. then it may be OK. Of course, depending how small your industry is, you don't want to cause ripples at the new place that could haunt you down the road.

How long have you been at the new place, and if you're that miserable without sailing (as I would be too), can you look at a different place?

Good luck!

Mike