I am also a large guy, 6'2" and 240lbs. I have a pair of tan deltas. been using them for over 5 years. Will buy another set if these ever wear out.
Started diving with a pair of mares avantis, wasn't enough power for fins that were way too long. So I tried a pair of jetfins, splitfins from two different makes and finally force fins. With my force fins I can smoke guys half my size and weight in speed races.
The reason behind force fins power is the kick and snap of the fin. Your power with FFs is all in your thigh muscles, you use your thighs to pull your bent knee-leg straight, when it reaches full extention, the fin snaps foward on the follow-through, you draw your lower leg back in a nice easy motion because the fin bends very easy in this direction, and when you start motion in the extention of your thigh again the fin snaps back the other direction. Your hips, butt and hamstrings do very little work with FFs unlike regular fins that make you stiffen your legs on each stroke in both directions. Your thigh muscles are quite a bit larger than your hamstrings, so why not use the large muscles for propulsion. It makes sense and anyone who trys a set of force fins and is shown the PROPER WAY TO KICK with them will love them. Half the size of standard fins, you can walk in them, climb ladders with them, and fin backwards better with them than any other make out there, especially for newjacks.
People dislike force fins because they are unconventional looking, and those that have tried them and don't like them have never been shown the proper way to kick with them.
It is essential you be shown the proper way to kick with them, because if you try to kick the same as regular long fins you won't get half the power out of them that you should be getting.
Try a set with some instruction on how to use them and you'll be sold. For wreck diving(because of compactness and the backward ability), or any where you might have to climb a boat ladder they are worth their weight in gold.:mute:
nuff said