Trailer Bunk dimensions for an 18.5
I recently replaced the bunks on the trailer for my 18.5. The old bunks installed were 6'. I increased 6" fore and 18" aft, for a total length of 8'. I used pressurized 2x6s, covered with heavy outdoor carpet. I attached the bunks with carriage bolts placed at the centerline of each bunk. Make sure you attach at the centerline. Also, in order to protect the finish of your hull, sink the bolts under the carpet, not above. The boat sits on the trailer much better now, and I plan on performing this replacement at least once every 2 years. Whatever the stock size of the bunks for your boat trailer, seriously consider increasing the length. If you need more information, please e-mail me at Chris.Haraway@home.com