...be of concern. I still have a loopy goopy roller left, one did the whole deck but my boat is small. The roller holds up very well.
Once you start...you can't stop in areas. If your deck is large, prepare for rinsing out the roller best you can in rest stops. Be advised, this stuff is tenacious so if you splash a drop elsewhere have it picked up pretty fast. Keep a wet sponge or cloth in a bucket nearby for such events.
Hope that adds a bit to your knowledge.