OP: for the love of God don't listen to this jabroni. He is perpetuating the same old wives tales. Si.ply lifting weights does not make someone big, as this knucklehead infers. GGetting big is the result of diet and rest more than a simple gym routine.
Another old wives tale is the "functional strength" adage. All strength is functional. That's how muscles work. They are all about function. It's why they exist.
Also, I Disc Golf is likely not a licensed and bonded personal trainer. I am. I have competed in just about every physical activity under the sun. I'm not some idiot who is trying to make you look like Schwarzenegger.
Full body work outs CAN be effective if you have a trainer or dedicated partner and are willing to do it for two to three hours, three to four times a week. Trust me when I say the routing I posted is quite effective, is not "ridiculous" and is neither about "getting big" or "gym strength". I reiterate: there is no such thing as gym strength. It's a term that should be obliterated from use.
If you want to improve distance in disc golf, it will help to have strong shoulders, legs and core. However, you must implement other body part exercises as well to avoid muscular imbalance. My routine provides this. If you are not satisfied with it, or feel it won't work for you, please consult a personal trainer or exercise physiologist and don't listen to the old wives tales that continue to circulate. Many personal trainers provide a one - time free consultation to gain your business. They can work with you hand in hand, judging by your body type and general level of fitness on what will work best for you. There is no right answer to be found on the Internet without a trainer personally evaluating you. There are, however, plenty of wrong answers like inferring that lifting weights will ruin your technique and that people who lift weights are brainless morons, as been inferred already in this post.