Here's his catalogue listing along with a little video showing how the 'glass sleeve is applied.
I put a tape around the mast at the top end of the sleeve, this to provide a clean end to cut the strands of fiberglass to. Next, I taped the end to the mast to control it while wetting out, and got into it with a brush and epoxy.
After all this was done, I was sitting on my bunk reading and sipping my mug of tea, watching this guy sitting on the end of my dock. He or she is a Pied Shag, quite a big bird, similar to a Cormorant. There are lots of them here as well as their cousins the "Little black shags" and the occasional King shag. Its that time of year when the birds are seeking mates and making nests, so there is lots of interest and activity here on the river.