Opti Coat will not spread over a lot of space this time of year so shrink your area and make sure you see a trail behind the applicator...even if it is flashing fast.
What do you mean by that Chris? Cooler weather? (I'm thinking cool because it's been almost cold here in Ohio.)
I would think that in hotter weather is when you'd need to shrink your work area and make sure you see a trail behind the applicator.