The same guy that installed my hull wrap removed it. Cost $150 and took him less than 2 hours. He used a heat gun and it pulled right off.

For lettering, sponsor decals, stripes, etc - use a 3M Stripe Off Wheel. I used it on my a-cat to remove a regatta decals, etc that would not come off. It did not scuff, mar, or scratch the gelcoat.