Maciej Urbaniak (user name on forum : hrabia-lolo) will make any decal for you, just needs picture and dimensions.
From Facebook ...
Guys! I can reproduce each kind of decal or sticker for your classic Glastron! So far I have done a lot of reproductions for Glastron and Glastron Carlson (see on pictures below).
It started with the fact that I needed a decals for my own boat - Glastron GT-150!
Now I have infected love for classic Glastron many people in my country and I feel like a real "Brand Ambassador"!:-)
Anyway, if you need a new decal for your Glastron, let me know! I can do the same as the old one! I will need a good picture with dimentions or better an old decal!
Greetings from Poland!:-)
His eBay store ...
szczecin1994
http://www.ebay.com/usr/szczecin1994?_trksid=p2047675.l2559