hey guys i just started going bowling and i really like it so me and my friends are going to go 2 times a week and take it more serious.. I am wondering what would be the best ball to start out with.. I like to spin it and i can bowl about a 120-130 doing that. I use a 8lb ball and it worked pretty well but i noticed alot of the time it seems like its not heavy enough to knock down some of the remaining pins. The reason i used the 8 was because im not that strong plus the finger wholes were perfect. So what im wondering is should i get something like a 10 pound undrilled on ebay for around 20-30 dollars then get it drilled a bit smaller so it will fit like an 8 but weigh like a 10? Or should i get heavier? Can they drill however big u want? ive also seen some with rubber in the wholes, what does that do? Anything helps guys cuz im a noob :) Thanks.