Yeah I use 10 minute epoxy to seal sidewall and topsheet gashes all the time and it works stellar. This is actually super critical if you own A-Bangs or any othe wooden sidewall ski. Avoid getting it on the base if you can but if you do it should pop off if you pick at it with your fingernail. Good luck!
secret fucking SNOWBALL mission...
Chaitea, "The best gloves are mittens."
Park Guy, "Everytime it snows my dick takes a beating."
Oh in that case I've done that exact same thing with marine epoxy. still holding strong and I took them into the shop and showed them my hodge podge job and all they did was sand it a little smoother so it wasn't so ugly. good luck