I purchase a Zodiac MK II GT C a few weeks ago and the previous owner included these two brackets (?). He didn't know their purpose, but they seem like they certainly have one. The end covered with the PVC has a slight curve as if it might conform to a tube. Initially I thought 'fishing pole holders'. but there is a pin that would otherwise block a fishing pole inside of the aluminum tubing. I have the catalog of accessories for Zodiac and these don't resemble anything they were selling at the time. Any ideas?
Sure looks like fishing rod holders to me. The pin probably keeps the rod from going in too far. They probably were designed to bolt to the side pieces and wrap around to the tubes. Home made for sure which makes them cool!