I was wondering about that too because I am in 4 leagues and the season starts the 2nd week of August. I'll get my surgery date next week but my surgeon assured me it will be in July. So thats good, 4-5 weeks isnt bad. Hopefully I will be able to bowl the 1st week.
What I'm also looking forward to is to bowl better with less weight. My average used to be in the 190s but over the last 10 years I've slowly put on weight and last year I quit smoking and gained an awful 75 lbs. Last season was my worst season bowling and I attribute it to the extra weight. I get tired quick, I can't get the ball out on the lanes like I used to and with my wide body, its hard to get "lined up" for my shot.
I ended this past season with a 177 average which was the highest of my 4 leagues. I am really hoping that this weight loss will start me on the road to a 190+ average for this season.