They're called Whizz roller system - high density Foam. I used them first to apply the sealer on the interior panel - they worked great. So I thought I'd give em a try for the resin. They make several sizes. I'm using the 4" foam rollers. They are the same width of the fiberglass tape. I get about three strips down (8 oz of resin per strip) with a single roller before it starts to set on me. After the first strip of tape applied - I figured out the best method. First I lay down a good rolled rich strip of resin then apply the tape - then roll over the top until the fiberglass is wetted out. Once cured, I then sand the edges to get a level edge - then apply a second top coat. I repeat the same process on every seam and edge. I too tried the soak the roll method - but it often put too much resin on the tape and ended up in lots of runs and gooped up tape edges that meant long sanding times with a belt sander.
It's time I'm having troulbe coming up with.. 
It is going to be a heavy tow for my current vehicle, and since #1 tows with ease (I've done over 6000 miles with this TV) I'll be bringing that one. 
