Have you ever ACTUALLY got a strike with your eyes closed?
I have. Closed for the whole approach.
There is a center in WA where I used to bowl called New Frontier Bowl. It was the easiest house in the area. And known for it too. They put a blocked off house shot on the lanes. When we'd go around bowling at different centers we always knew that if we struggled we could always go throw a few games at New Frontier and feel good about ourselves. You could miss your mark by as much as 5 boards and the 'V' into the pocket would guide the ball in. Of course it took a couple tries with the eyes closed. lol
Non-scratch bowlers and new bowlers just don't realize the huge diffence that there is in lane conditions. It's one of the reasons that the scratch bowlers get beat more on handicap leagues when the lanes are bad. The straight bowlers don't care about lane conditions.