Question

Full Foot or Open Heel Fins for warm water..why?

Answer 1

Open heel fins have an adjustable strap that allows you to snug your foot into the foot pocket. You need to wear wetsuit boots booties with these fins, which is necessary for colder water and great protection for your feet while walking on shore or a boat deck.

Full foot fins have a foot pocket that slips on like a shoe. These fins are popular for warm water diving, especially from boats.

Answer 2

I like open heal fins because you can use them both for boat and shore dives. They help protect your feet from rubbing of the fins (wearing booties) and also helps to keep your feet warm.