i've been trying to some extent imitate Gael Monfils' serve - mainly his foot placement. I'm receiving criticism from some of the people I play with.. They are not particularly good at tennis, but watch it semi-regularly. Watch this video if you don't know how Monfils serves. Tell me if you think it is not a good idea to try to serve in this fashion.
http://www.youtube.com/watch?v=mMCk1OK4Lw0