The only leash you need is the one to match your boat 🙂 Think surfski = Think leash!
You should also practice your remounts while wearing your leash so there are no surprises when you need to use it in real conditions.
We ALWAYS recommend using a leash whenever you surfski. Even in calm conditions if you fall out of your boat it can be blown away from you quicker than you can swim after it. The Think leash is a great option to keep you as safe as possible.