Over the years I've built more plastic model kits than I can count and I've gotten very familiar with water transfer decals.
With an aim to making some of my own decals for the Pulse 125 I'm building, I picked up a package of Testors clear 5.5" x 8.5" decal paper (#9201) and a can of decal bonder at my LHS. I laid out the graphics I wanted and after some test pages and some fiddling with paper orientation in my inkjet printer, they came out looking very good.
I gave them a single coat of decal bonder tonight.
Tomorrow I'll try a small test to see how they hold up. If the test decal passes, they all go on. If it runs, another coat of bonder and another test.