Christine

Great- it sounds like fun. But please don't get injured. if you have been avoiding lifting anything heavier than trash, please start lifting little 3 to 5 lb handweights first to build up unused muscles. You can use a waterbottle also - see this video from Brunswick Bowling Fitness Tip - Water Bottle Weightlifting The weight of most "house" bowling balls range from 6 to 16 pounds but you should stick to 10 or 12lbs those first times out until you are comfortable. Here's a link to pre bowling stretches: Some Exercises to Warm Up Before Bowling
Can you guess my little brother is an all star bowler as a hobby with scads of trophies? Me- I like it when they fill the alleys with bumpers so no gutter balls.
I find I get the most granulation when my tube slides in and out easily which happens after about 2 months.
Keep the faith
Charm