: At least it's a canoe and I assume that's on the bottom. How about
: a smiley face sticker.

: I had some water infiltration on kayak bruises and no matter what
: you do, it ends up looking darker so it's a beauty mark.

Smiley faces may be a bit cliched :)

How 'bout a white pinstripe ust inside the dark edge, then sign your name in white inside the area.

Makes a nice freeform signature area.

Go boldly and it looks more like a feature than a blemish.

Just a thought

PGJ