Da Kine coil ... at first great, then after a half dozen bigger wave sessions, the coils uncoil and it's 6' long dragging behind you, lots of resistance in the water.
I am experimenting with the kite reel leash option (Oceanus), tied to a waist band. Nice to have nothing in the water, but jury is still out if it's better/ideal. Super nerdy look is a bonus, like I need more of that.