Part 8: Duct Tape the Fin Mounts:

You’re nearly done, thank Heavens.

The strapping tape that holds the fins into place must be covered with duct tape. So pull two 2 foot and 4-6 1 foot pieces of your choice color duct tape, preferably a color that matches the fins so your javelins will look smart. Cover the strapping tape first longitudinally down the pipe with the long pieces and then with the short pieces wrap them around the pipe circumferentially. Cover strapping tape or it will degrade in the sun and all your nice work be lost: and the smoother the duct tape the more aerodynamic your javs will be.

If any strapping tape ends stick out beyond the duct tape, again use your razor blade or utility knife to trim these off.