For everyone I think it is important to keep ones "torso" in good condition. (Stomeck, back, hips). And the the inner abs.
Check different Pilates programs.
I made my own workout after searching some examples from internet, - but I have some experience in Method Putkisto and martial arts - and a Msc in PE. (So there are other programs that concentrates on mid body, too - not only Pilates, but Pilates seems to be IN now.)
After I have my mid section strong and flexible, I will focus on legs. That is where the power comes for a golf swing. Torso needs to be strong to keep the swing in shape.
Here is just one link.
http://www.lhj.com/lhj/category.jhtm...es_Pilates.xml
google for more
Hannu