I think contact is getting crappier, I have endless trouble contacting books, and I hate this time of year when there are so many of them to do. I always used to do the fold in half work fromt he spine method, but no more, I jhust don't have the coordination. This year, I fold in half, put hte spine in the middle, then peel a little way back on one side, lay a little bit of the book cover on it and stick down (enough to not get bubbles), flip it over and use a ruler to smooth it down as I pull the backing off, all very slow. When you get to the middle, turn the book over and keep going.
Don't know if that makes sense, but basically, I do it all in one direction.
As an aside, Monday this week at 8am, DS2 knocks on the bathroom door, "Mum, can you cover my books?" NO
. Honestly, he'd had them since Friday night.