Here are my personal experiences using both Scuba Pro Twin Jet fins and Scuba Pro Jet fins:
Twin Jets:
Jets:
If you're getting cramps then you need better hydration and more potassium (eat a banana before your dive).
Twin Jets:
- Noticeably easier to kick with, but you do not get the same distance per kick as you do with Jets
- In a single tank rig you CAN back kick, but not nearly as efficient as Jets
- Doubles rig with a stage/deco bottle? Forget twin jets. Not nearly as efficient as Jets. It's like trying to fin while pulling a parachute.
- swimming against the current in Cozumel? It's can be done, but you're not going to get the length per kick that you get with Jets.
Jets:
- Take more effort to kick than Twin Jets. In fact the first time I wore them I could have sworn that somebody duct taped 2x4's to my feet, but the distance covered in a single kick is drastically further than twin jets.
- Doubles with a stage/deco bottle are much easier to push through the water with Jets.
- Frog, Back, and modified flutter are much more efficient with Jets.
If you're getting cramps then you need better hydration and more potassium (eat a banana before your dive).