What I find is most golfers want a fuller range of motion in there body movements and to rid themselves of nagging aches and pains that they often attribute to aging. They want that supple feeling they remember in their youth. Yoga , Pilates are all very effective towards achieving those goals.
But simple and correct stretching is more realistic for most folks. The issue is that unlike weight lifting programs or cardio routines where you can see and feel measurable improvement in your conditioning when most people stretch they just don't see or feel measurable improvement. So they give up and say things to themselves like " I'm just not a flexible body type" or some similar reason and continue on with more familiar routines at the gym working on the equipment.
Fact is static stretching that we have all been exposed to since your first gym classes in grade school is a wholly inadequate protocol and the older you get the more ineffective it gets.....and that cuts to the core issue why most folks don't like stretching and don't do it. What you have been taught does not work. Hah, sounds like a bunch of bad golf instruction. LOL.
Proprioceptive Neuromuscular Facilitation or PNF is the real deal. Its the owners manual for your body that should have been issued. PNF stretching is a safe and easy to use method that involves stretching the muscle, contracting it isometrically against resistance, then stretching it again to a new range of motion. Once you learn it, and its simple, you will be amazed at the results. Besides PNF the other great stretching protocol is something called Active Isolated Stretching that is pioneered by Aaron Mattes. Like all the great golfing protocols that have been around for decades Active Isolated Stretching has been around since the 1940's. Why more people do not know about it is a mystery.
If your interested in learning more then I would suggest Amazon and a book by Aaron Mattes titled: Acitve Isolated Stretching, The Mattes Method. For PNF I think the best offering is a book DVD combo by Robert McAtee, Facilitated Stretching. Either/both will literally change your life and put you firmly back in control of your flexibility and ROM. There are other books and practitioners on this subject, these are just my favorites. Plenty you can Google to learn more.