Had my first shot at applying Kiwigrip today - album here:
imgur.com/a/04EWOB5Most of the detail is in there, couple of other points I'd add in;
* I used the grey colour and it's pretty darn light - photos make it look almost white. I'll be interested to see how that changes as it dries. As it happens, suits me fine, but something to consider if you were looking for something darker.
* Ripping up a second roller to glue onto a paintbrush would definitely be a good idea if like me, you've had to leave some deck hardware on, or have harder to reach places. Will definitely make one for second go.
* I slopped on with a paint brush and did a semi paint with it, then used a notched trowel to spread it properly. The great advantage in this was after using the trowel, it soon became apparent where I needed to slop on more.
* I worked in sections of about a foot square, with the tape setup to help me. It was roughly 23-25 degrees and the deck was in full sun, working alone, I definitely wouldn't want to do more than that.
Overall though, I'm super happy with it now - can't wait to get back to it and see what it's like to walk on.