In theory these things are excellent

In theory these things are excellent, and when attached, they do work great. However what I don't like is how flimsy the attachment is on the side. The bungee is pulled through the hole and then a plastic cover is holding the bungee in. I managed to pull out the bungee when putting them on, breaking on of the two small plstic arms on the plastic cover - luckily I found the plastic bit two meters down on the dive boat, and I could re-attach it. It has "stuck" ever since, but having to be a bit careful when putting on expensive fins like this is not really good. I am thinking I will make sure I got the bungee at the right length and then use some kind of superglue/cement to permanently attach the plastic cover so this doesn't happen again. On the PLUS side (I use these with Force Fin Excellerating Tan Delta's), Force Fins don't come off like other fins - the more you kick, the more they glue themselves to your boot - they absolutely stay on, whatever you do - a bungee/strap is only really required to make extra sure you can't lose them when entering a boat in choppy waters. And the Excellerating model rocks - frog kick not a problem either.

Excellent idea

Excellent idea. much better than original forcefin straps. Only moan is the price.