Back in 1975 I started windsurfing, I learned on my cashed up mate mistral club, lover it so went to look for a board, ended in a boating shop and the salesman convinced me to buy that very light hollow core epoxy custom made board with all the gear, I spent all my hard saved budget $300-00 on it (was an apprentice earning $50-00 a month).
Took it to the lake and had a go, the wishbone was utmost crap would not stay together and slipping up and down the mast, sailed all day, took the piece of crap to the car and noticed a BIG change in weight....... removed the bung and sure enough was full of water

.
Emptied and let dry over nite, next day was still as heavy as Gina

. Called the dealer for a refund the guy had a good laugh and hung the phone off.
My mate had a fiberglass business and helped me, cut the board open in 2 and found had been reinforced internally with epoxy soaked news paper that had soaked the water. He did a fix foam and resealed it. The fckuking thing was a real submarine.
The funny thing is some dickhead stol;e it from the roof of my car?????? WTF ???? Got my money back on insurance. Bought a HiFly 111 and was happy.............. should have put an add in the paper for tanking who ever stole the brick and offer the rigging an center board for free!
Karma????
Any story you want to share?