I use this one
I like it for 3 reasons -
- The velcro that attaches to you is long enough that it fits around my calf. Many surf leashes have shorter velcro and only fit around the ankle. I much prefer a calf leash (just below the knee) as it gets in the way less when swimming, is less likely to entangle in your legs, and the lever point is farther up your leg so if your boat pulls on the leash hard its easier to prevent overextending your leg.
2nd reason I like it is each end has a swivel. This makes the leash much less likely to twist over itself and tangle
3rd, its coiled. I hate straight leashes as they’re always in the way (for me at least)
Edit - 4th, I always go with a 10’ leash. Its slightly long but it allows me to reach my rudder without detaching the leash. I had 1 experience where I hit something (small-ish) on a 20kt 5’ seas downwind run a mile+ off shore and it bent my rudder enough that it would not go past neutral. I hopped off and bent it back a few degrees without needing to un-leash, which would have been very sketchy in those conditions
Im not loyal to this brand, I’ve had 3 leashes of this style from different mfg’s, but they all share those 3 attributes that I like.