RestorerIn recent years a number of products have come on the market that claim to restore the surface of the gelcoat. Restorer formulations renew the gloss in essentially the same way as wax--by providing a new smooth surface--but without the need for buffing. Results can be dramatic, but because restorers are a plastic (acrylic) coating--similar to urethane varnish--they can wear off, flake off, and occasionally discolor. Restorer kits typically include a prep wash and sometimes a polish in addition to the restorer. A specialized stripper for removing old sealer is also necessary.
There are variations in the recommended application, but in general it is the same as already described--clean, polish, and coat. The acrylic sealer is usually water-thin, so applying it to the hull is much easier than, say, paste wax. And it dries to hard film, so no buffing is needed.
However you do have to apply several coats--five is typical--to get a good shine. If the product you have selected doesn't include an applicator, use a sponge or a soft cloth to wipe the sealer onto the gelcoat.
Drying times are short, so subsequent coats can generally be applied almost immediately.A multicoat application can restore the shine to weathered gelcoat for up to a year, but when it is time to renew it, you will need to remove the old sealer using the special stripper supplied in the kit (or available separately).
Apply five fresh coats of sealer and your boat should shine for another year. Maybe 
