http://www.wakemakers.com/launch-pad-cap-plug-set.html
I lost a few caps so I am in need of replacements, just not sure if those will fit. Its the traditional outer threads where you need a screw-over cap not a screw-into one like the new ones.
Thanks for any help,
-Adam
try random bottle caps...water bottles, gatorade bottles, ect. I forget which ones work on those bags, but I have found something in the past that fit perfect.