Tues. 1-13 12 noon

I hate the flexi so I don't want to use it to help me correct my dog going around the jump to retrieve the dumb-bell.
Any other suggestions to correct this problem I'm having?

You didn't give any info on how you trained it, but...if you didn't teach your dog to jump as a separate exercise, you should. Starting low and running with the dog, ask him to jump and throw the ball for jumping. When he enjoys it and shows confidence in jumping, I'll use two balls and have him jump for a ball, as he returns, I tell him to out and jump and he goes back over for another ball. I increase my jump height until he is comfortable at full height - no retrieve yet. If the dog has obvious issues with just the jumping part (misjudges his takeoff, hitting the jump, stutter stepping before jumping, etc), then I recommend you buy the paperback Clothier Natural Jumping Method. It will tell you how to correct different jumping problems. Ok, once the dog is fully confident in jumping, you can introduce the retrieve, but now the jump goes back down to only 12-18" high so he can see the db thru the jump standards when you throw it. Usually I will run parallel to him the first few times, just as I did when he was learning to jump. I may have to repeat the bring command a couple times cuz up til now all jumping was for a ball reward, so he may not be thinking retrieve despite the presence of the db. No big deal. Encourage him to pick it up and hop back over the low jump. No front, just yes and ball. After a couple reps, I stop going with him (throws should be relatively close, about 12-15', so there is less temptation to go around on the return jump. If they want to go around on the return, step up to the jump after the dog clears it, clap your hands or tap the jump to attract the dog towards you, then back up to give him room to jump (they'll refuse to jump if you stand too close cuz you're blocking their landing).

Never jump a dog on leash - if you end up actually using the leash for anything, it's going to screw up the dog's jumping. If he tries to go around and you attempt to pull him back to center, you screw up his balance and interfere with his jumping, probably scaring him. And heaven knows, dragging them over by the leash doesn't make them learn how to jump or to like it! I've watched many a dog get ruined and even injured doing that silliness.

In addition to everything Lee has said, I try to take away the option of going around by setting up in a narrow area, or using construction fence (orange plastic) to block off from going around the jump. If the area is to wide to block off, just make a wide chute that narrows down to the jump. Gradually make the chute smaller as the dog becomes more reliable.