i read in another thread that you avg around 140, don't know if you were being sarcastic or truthful. personally, after viewing your vids i guessed somewhere in the 150s, but that is my opinion. as for sandbagging, if ur avg is really 140, nobody is even gonna notice/care if you start throwing plastic and ur avg drops to 120s.
i agree that kids in yaba don't sandbag intentionally, but are just really inconsistent. i have seen yaba kids shoot like 270s then the next game shoot sub 120s. people really only care if you are sandbagging and winning their money, via tournaments/league. if you look like you have great form/execution, maybe like you should at least be averaging 190+ but come in with a 160, people are gonna say something and complain. in ur case, since you say you don't' bowl tournaments or very many, i don't think people are going care. however, i don't think just bowling with plastic is gonna make you that much better of a bowler. i would guess it would just piss you off more, since scores will be less and the game will not be as fun. since you just started, you might as well have fun and try to score and eventually you will get better, not many people just start out averaging 200s.