Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Has anyone used this to apply as base coat / protection on a fiberglass surfboard?  Thanks for your thoughts.
Document: So, the gel paste is clear. It comes with a hardener. I used it to coat the keel on my sailboat, large areas. I did have to cover with wax paper. It got  very hard after a few hours. It needs to be sanded to get rid of the marks left by the paper. The paper comes off very easy after a few hours. I am planning to apply a second coat to make it thicker after a light sand first.
Don't know why I waited so long to spruce up my boat, as this stuff is great. The thick gel goes and stays where you put it, cures quick, sets hard, and sands flush easily.I also purchased white, black, brown and yellow coloring agent to match my gel coat very closely. Trial and error mixing of small batches without the hardener, will allow you to dab on the boat, compare and then wipe off.
A friend damaged the hull of my jetski. The damage was rather deep but not through. I used this product in two coats. It filled easily and is rock hard. Although the product is difficult to sand, it definitely does the job.
Once I had a feel for the ratio, using a small putty knife, I mixed up roughly 1 ounce globs on a mixing board. A dab of white and then toothpicks to drag in just enough of the other colors to match the off white hull color. A little goes a long way!I used Scotch tape to seal and level these small surface repairs, with a piece on the back side for screw holes.
It worked fine and was fairly easy to use. The product does not cure as hard as the manufactures product but for cosmetic work it does a nice job and is easy to sand.
Great way to make small repairs to any boat. I recommend buying the coloring agents so you can blend it in with the boat color.
Check out the many YouTube how to videos. It really is easy and worthwhile... give it a try.
Answer: no