Keel Guard and Keel Shield are scary expensive but there are a few Marine tapes
and Boot Stripe tapes that are cheaper and replaceable when they wear out.
There is even a Marine version of Gorilla Tape that might work as well.
https://lghttps.13784.nexcesscdn.net/8068F8/mage/media/catalog/product/cache/1/image/370x/9df78eab33525d08d6e5fb8d27136e95/G/O/GOR60012-LRG.JPG
$4.56 for 12 yards sounds good. I'm sure a few others will add to this.....Jerry