That's interesting. I have been powerlifting for years and, like you expressed, it has only benefitted my strength and my golf game. I will do a full blown Wendler 531 before I go play. I guess my forearms don't tire out because I've done it for so long that my body is used to it. I'd have to be on my "max-out week" and deadlift around my max, going to failure on pull-ups, or going for broke on barbell curls before my forearms are toast. For a normal session, I don't get sore; that's not the point with powerlifting.
For me, other than getting a good warm up through powerlifting and hitting some balls, really warming up the hips is key. My trail hip can get tight and it makes it easy to stall and flip.