Leakey mast partners have been a problem forever!!
We have found your solution. Very flexible rubber with aggressive adhesive backing, UV stable and durable. 5" wide and 1/10 of an inch thick. Tape is applied bottom up, shingle like manner. Once in place it forms a one-piece custom fitter boot. When remove ding the spar, just slit the boot with a knife or razor and peel it away.
You can leave tape applied as is or cover it. Professional riggers have been using this tape with great success.
Available in two different sizes. Black color only.