Continuity mistake: In the beginning of the scene where Happy is talking about the being a good shot with a nail gun, he covers his eyes and shoots Mr. Larson in the head, but when it shows Happy he has the gun behind his back.
Continuity mistake: In the scene where Mr. Larson bends Shooter's golf club, the camera shot from behind Larson shows him bending the club until both ends of the club are parallel. But in the next shot, from in front of Larson, the club is not bent as much as in the shot before.
Continuity mistake: When Happy hits the ball during the bet with the two movers, we see a point of view shot of the ball traveling towards a house. When we get a shot of the owner of that house being hit, it's a different house.
Continuity mistake: When everyone's chasing Shooter, after he steals Happy's jacket, there's a closeup of Mr. Larson. To his right, there's a guy in a dark blue shirt. When it cuts to a wideshot of everyone, you see the guy in the blue shirt, but you don't see Mr. Larson.
Continuity mistake: In the final tournament, Happy's caddy puts the ball down on the green where the (fully intact) cracker is, then picks up the cracker to take a bite. When we see him up close, there is suddenly a small bite already taken out of the cracker before he bites into it.
Continuity mistake: At Happy's first tournament (the one he goes to with Chubbs), when Chubbs does the 'it's all in the hips' motion there is a lake behind him and Happy. However, when Happy then hits his ball and we see the overhead shot from the ball's point of view, we can see that there's no lake anywhere near them - it's just a green fairway.
Continuity mistake: A number of time when Happy is Teeing of if you watch closely the ball actually goes through his legs not straight ahead.
Continuity mistake: Towards the end in the championships,when Happy swings, his shirt comes up and his stomach shows. The next time, you can see a grey shirt tucked in underneath. Then later, there's just his stomach again.
Continuity mistake: When Happy drives the ball down the street and it hits a house the golf club is resting on his shoulder. A second later he is leaning on it.
Continuity mistake: When Happy is confronted by the IRS man, and is told about having to give up the house, the folder in the IRS guy's hands keeps switching hands from shot to shot.
Continuity mistake: In the scene where Shooter is with the other pro golfers, (the ones with the gold jackets) and they're drinking wine, Happy interrupts them wearing an ACDC top. Notice Shooter's wine glass switch hands a number of times, and when he tells Happy to meet them on the 9th green, the wine glass has disappeared totally.
Continuity mistake: When Happy hits the AC in the window it has bigger sides to fill the window space. When the AC falls on the Mista Mista lady the extra sides are gone.
Continuity mistake: When Happy punches Bob Barker for the first time, Bob falls down a few feet away from Happy. You can see him start to get up almost immediately. But, in the shot of Bob from the front as he's standing up, he's much closer to Happy than he was in the previous shot.
Continuity mistake: The wound that Happy gets in his fight with Bob Baker becomes larger and fresher when he is in the subway place, and the next day the wound is gone.
Continuity mistake: While Happy is talking with Shooter and Virginia at the house auction, the sun is changing between shots.
Continuity mistake: When Happy wins the 3 in a row shot bet with the two guys, the sun changes between shots.
Continuity mistake: When Happy makes his last shot and wins the golden jacket, the sun changes between shots.
Continuity mistake: On the last hole, Shooter McGavin overshoots the hole and the ball ends up going past the green. However once he shoots the ball off the man's foot and onto the green, we now see him coming onto the green from the fairway side at the bottom of the screen, not from behind the green past the hole.
Continuity mistake: When Mr. Larson bends Shooter's golf club, he's holding the head of the club in his left hand. When it cuts to a shot behind him, the club's head is in Mr. Larson's right hand. When they show him from the front again, the club head is back in his left hand.