| Typically fiberglass boat bottoms after several | | | | application and results on both displacement |
| years of use become scratched and gouged from | | | | sailboats with keel and a canoe. The systems |
| rocks, grounding, and flotsam. A one-inch scratch | | | | employed can be applied to all fiberglass boat |
| can produce turbulence for 12 to 18 in. down your | | | | bottoms and can be seen in video form at: |
| hull. Turbulence interrupts smooth flow producing | | | | (youtube address when found) |
| drag which need more power to over come. | | | | The first step is to wet sand the bottom with a |
| Your boat bottom may also have a few gel coat | | | | 60 to 100 grit 3M type sanding sponge. Purple or |
| patches where rock impact has flexed the | | | | green sponges work well. Wet sanding will remove |
| bottom creating weak spots that were repaired. | | | | any burs of fiberglass along with any marine |
| But the gel coat used may not be flush with the | | | | growth or wax buildup that may be on the |
| bottom. | | | | bottom. Next, wipe the bottom with a damp rag |
| The techniques demonstrated here show | | | | to remove any dust which remains. |