i have played golf under most substances, ill list a few
LSD low dose 25-40mg ---Amazing for golf, put's you more in tune with your body and all the forces that govern the golf swing. I think any golfer would benefit from 2 or 3 low dose practice days. Just don't take too much or the ball will start moving and the tree's will sway.
Mushrooms- Micro Dose!!!- same as above just doesn't last as long. Great for rekindling passion with the game, appreciating course design and nature around the course. Good for hotheaded folk's
Modafanil- Great for focus and concentration. If you want a 8/9 hour practice session but feel groggy, this will wipe away the grogginess and make you motivated.
Ritalin/Adderall- Not good, Makes me jittery and comedown 2 hours after ingesting which is not pleasant.
Cannabis- Great for technical work and if you live in a cold wet place it sure makes things more palatable. Sativa is much better than indica for golf. Can make you lazy and overthink things though.
Coffee- Great mixed with weed as they couteract one another. Can make you jittery and has a crash
Alcohol- Good for a round with some mates but i wouldnt drink if i wanted to work on my game.
Kratom- Great energy booster- enhanced focus and also makes you feel calm. Slight comedown after 4/5 hours. However this is being made illegal in 2 weeks. Too much of a threat to many medictions as this stuff is far superior so of course they must ban it.
Ketamine- WOULD NOT RECOMMEND
I have used these mainly for practice but in some cases i have played competitively on them. A low dose of LSD if my favourite for either a long practice session or a competition. Very important to get the dose right however. I actually shot my best competitive round last year -5 on a small dose of LSD with a small dooby at the turn. Im also a demon at pool on a micro dose.
I think most people are operating far from their potential due to the level of distractions and poor diet. Golf requires diligence and focus, if you need to take a little something to aid this, so be it