Athletic tape. Not very durable, in fact, down right temporary. It's purpose is one-day application for the treatment of prevention of sprains and strains.
I suppose I got the habit back in my climbing days, when taping for abrasion protection was standard for the rough crack climbing we were exploring at the time. Taped up like a boxer (not as thick), we would plunge our hands into 1- to 2-inch cracks lined with razor sharp crystals, twist and cam, and pull ourselves up to crazy heights. I could go through 2 roles in a day if the climbing was tough. Today we went ice climbing; the sole of my boot decided to peal wide as a whale, leaving me flapping and clownish. Tape to the rescue.
Uses on a boat?
- Tiller grip. Doesn't last too long, but renews in seconds.
- Securing rope ends while coach whipping.
- Protecting stitched eyes from UV. Conforms nicely and holds-up if painted.
- Rigging tape. Doesn't last, but is also porous and does not deprive stainless of oxygen.
- Pre-wrap in stainless tubing, so that clamps hold better.
- Protecting stainless from scratching under clamps
- Non-scratch bottom on anything you don't want scratching the varnish or gelcoat.
- Tape your knuckles before sanding; can save a lot of lost skin (as strip over the areas to be protected, then a thing ring between the fingers to keep it in place).
And the "athletic" uses are endless, treating the bumps and bruises that come with cruising. Almost as vital as ibuprofen.