I've been playing tennis for about 10 years and i'm a 4.0 player. I've always had a hard time producing enough topspin on groundstrokes and serve to really allow myself to swing out. I currently use a semiwestern grip on forehand and continental on serve. If I really concentrate I can get the spin that I need, but it's not really consistent and lots of times it'll be too flat so the ball will go long (forehand and 2nd serve). Recently I've found that If i use more extreme grips on forehand/serve then I can trust that the spin will be there and swing out on my strokes. The thing is...I've heard a lot of coaches say not to use these extreme grips. What I like about it is that I don't have to think too much about my swings when I use those grips - the spin just comes for free. What do you guys think?