Mystery hole in sail

[waterman46]

Originally Posted by Jesse

Could it have rested against a tail light bulb while in the trunk?

This is the answer, I thought of it just before I read yours, so I can't take credit, d**n!

[hamburking]

It looks like a cigarette burn to me. Flicking ash, or flicking a butt carelessly. Any smoking going on around your sails?

[mabowers]

Do you have a cat ? Looks like corrosive cat piss.

[GILow]

One more for the light bulb burn. Older (90's) BMWs were notorious for it. They had these fancy plastic shields that fell off (melted probably), then all hell broke out in the boot (boot = Australian name for trunk). The best bit was then playing "Connect 4" with the fault display system.

[johnrseager]

I'd go with a light bulb in the boot/trunk too. I once had a hole burnt in a nylon suitcase while the boot lid was open for a few minutes and the interior light came on. Of course you don't notice it at the time because the item is blocking the light.