Hi Randy
I brought the glass sleeves right through the deck and finished them on the deck side. So there is glass running through the full cross section of the deck. I flared the hole a bit on the deck side and then fluffed out the sleeve and taped it to the deck. I put a bunch of tape on the deck around the openings because the epoxy ran through the hole and would not stay where I wanted it otherwise. I think bringing the sleeve through the deck makes for a stronger unit than if the sleeves end on the inside of the deck. The black circles you see in the photo are something I probably did not need to have bothered with: I followed the old recommendation of always "drill, fill (epoxy) and drill" In other words I drilled the holes oversize, filled them with epoxy and then drilled the to the final, smaller size. This protects the wood from water infiltration but I kind of doubt it is necessary when the 'glass sleeve is there acting as a "spacer" to allow an epoxy layer to form over the cut surface of the hole.
One other clarification, I used two layers of masking tape around the hole on the deck side. One on the bare deck, then I fluffed and splayed out the 'glass sleeve, then put a second layer of tape on to hold the glass down. The layer on the deck kept all that extra sleeve that had to be removed from bonding to the deck. I just wanted a tiny ring of the sleeve tp bond in the immediate area around the hole.
I hope this helps.

Ric

: Hello Ric,
: I have read everything a search will bring up on this site
: concerning Maroske fittings and looked at your photo's. I am
: understanding all except how are the ends of the glass sleeves
: finished. Are they attached under the deck or do they come
: through the deck and finished on the top side? In your photo of
: with the clear tube with electric wire stiffener there is a
: black circle of something in the deck that the tube is coming
: through, what is this?
: Thank you,
: Randy