Johnson's Pledge One Go is indeed the Australian cousin to Future.
However, unlike the original Future, which is crystal clear, One Go is a slightly cloudy light brown colour. It works just fine as a canopy dip but not quite so well as a gloss coat.
I have only used this on one model so far, without any adverse results. I would add though that I wasn't able to get the reputed high gloss finish of Future. I might be able to put that down to my only applying a very thin coat which was thinned approximately 50/50 with methylated spirits (aka denatured alcohol).
Similar to what Ross has mentioned, I have noticed similar "spiderweb" cracking on some of my old models from the mid-late 80's which were painted in gloss Tamiya acrylics. However, these were not gloss coated, so it's impossible to tell whether the cracking was a characteristic of the paint itself, whether it might be an interaction with the clear coat in your case, or whether mine simply cracked due to age.
Just to avoid any confusion, this is the product I'm talking about.
