Yes....Moorings has them but we are usually in a hurry to get out and historically we would take some for our 9 person crew and one would have a problem and they are lesser quality so we now bring. Note we just take carry on luggage and follow the 2x the cash 1/2 the clothes mantra. I try to minimize the day of sail extras so I can focus on boat briefing, area briefing and my captain briefing to the crew

to you point fins are too big to pack and more interchangeable

But Moorings has them for you and my advice would be take extra as you can...