You can do this repair yourelf. Buy white gelcoat. You can get it from West Marine if there is a store near you if not www.fibreglast.com will sell you what you need (you can also call them for how-to advice). Gelcoat is sold in quarts (you'll only need one quart to do all the minor repairs you have) with catylizing agent (MEKP, which you can buy at Home Depot). Mix only what you can use in 15 minutes or less (I'd go with 4 ounces, maybe 8 tops). Apply with brush (use a dispoeable or clean IMMEDIATELY with acetone). You may need to apply more than one coat, sand with 180 grit between coats and then after final coat use some 300 then 600 grit. I wear disposable gloves and old painting clothes.