Jake is correct if you want to make a nice fairing get the small cans of west system 105-205 and some powder. Use the pumps, after a prime; the ratio is right on each time. Mix some powder to make a paste. You need to form it up and wax it up. A simple way would be to use duct tape on every thing, silver side up. Tape the beam, hull, and you could use cardboard to make the side fairings. Tape the cardboard in place to the hull. Then use wax car wax will work. Wax the **** out of it then pour the paste in there. Make the paste the consistence of peanut butter. Put your beam in place and let it dry. Remember tape – wax – cover everything that you do not want epoxy on. Plan for some slop. Make the paste thick so it does not run.

Wait a day then take it apart remove the tape. Wash the part in soap and water, sand slightly and paint