It was a challenge because vinyl sticks to the liner very strong, and here is the way I did it:
start with ordinary reverse roll, and when you start to take the liner off, make it a bit bigger than when you want to snap it
like this:

put it on the glass and pushout excess water to make it stay on the glass

now you roll that liner from the start of the peeloff all the way to the film that remained rolled

now you can keep rolling the liner (which gives you enough force for peeling vinyl that wide) and
at the same time hold that rolled film above the action so you can keep the glass nice and wet
and it aloves you to get of the ladder (that was my problem)

after the film is on the glass proceed as usuall
here is one more photo of those bigg'uns

It took 11 hrs to do it by myself and it was 46 sq meters
I don't know how much it is in sq feet but it is like one 60'' roll
I hope this helps you.
