Repair Job On 14 Foot Royalex Mohawk

After noticing various minor cracks and dents in the outer hull of my canoe, I decided to mend them to the best of my ability. For the record, none of them compromised the middle or inner layer of the hull, only the outer section. Still completely watertight.

The worst trouble spot was the stern end had started to eggshell on me from old age. None of these were incurred by me, I just got it.

I used Attwood brand marine polyurethane sealant (I believe). What I did was apply it in small lines near and around the areas that I felt needed filling in. I then took a piece of cardboard and spread it across and into the trouble spots. (small dents the size of a penny or less, and the eggshell area) I applied it evenly and it seems to have cured beautifully. I will be painting over it eventually. The product said that it was water resistant (obviously) and UV resistant. Seems like it worked.

Has anybody done anything similar? How did it turn out? any further suggestions?