I have recently picked up tennis as a sport .... I just realized (After weeks of practicing my serve) that i start off my serve motion with the continental grip but during the trophy pose (while the ball is tossed) i change my grip to an eastern forehand grip (The fying pan grip) .... Now since then i've tried the continental grip serve and it just feels awkward and i don't feel any power coming off the serve .... how can i improve? I am taking coaching too and my instructor picked up on that immediately when i was serving. Is it a matter of practice ?
There's a product called I thnk the power V or the wedge or something. But you can just get five pieces of double sided tape and put it on the top bevel of the eastern forehand, it should be about three inches long.
What this does is lock your hand into the continental or any grip for that matter. Bolleteri used it in his training as well. It's an awesome trick.
Check it out here: http://www.tennisgeometrics.com/