I had a similar 'HOLY COW!!!!' Moment when I got my prong on Koenig about 6 months ago. Amazing tool, when used responsibly.

 Quote: Jenny Arntzen

I find it works best if I adjust it up behind his ears at each stop. Otherwise it slips down and isn't as effective. I don't know if it is the size of Jethro's neck or what, but either it is too tight - like he is on constant correction, or it is slightly loose and slipping down. All his collars slip down, even the properly sized DD (I have two now). I've also added a length of collar harness between the DD and the prong - to make sure the prong activity isn't being compromised by any tightening on the DD.

What size collar is he wearing? A Large does not fit Koenig- I had to get a size small, and buy extra links so we could get a good fit. I've also seen folks with big strong dogs using the Micro prongs. The smaller the prong, the most adjustable it is. (and it's got ore contact with the neck, so a higher correction if you look at it like that.)

Just something to think about, maybe he needs a smaller style, and it'll stay up better.

AWESOME PICK KELLY!!!!!!!! WOW... someday maybe! lol

At 6 months, do you recommend a DD collar with the prong? His flat collar is too much on his neck and I'm afraid that it will cause unnecessary pinching getting all jammed up in his hair. A harness won't work I don't think, so a DD collar is all I can think of as backup for the prong. I heard that dogs shouldn't be in them this young, but he is 62 lbs..... I am NOT heavy handed. So, would a DD be a good backup for us? I think I can also get martingales pretty easily here. Otherwise, I'll have to ship in a DD over here. Take forever

I think the best part of the prong is like it says on here, that 1 correction is worth a 1,000 nags. I was so sick of nagging at him and turning circles and stuff to keep the pressure off the collar and leash and try to NOT continue the pulling behavior, and he just looked annoyed and was completely ignorant to what I expected him to be doing. But, I did watch the video before I partook in this and I do believe that a dog knows they shouldn't be dragging you around, and should be listening, and that was what was happening. He was ready to have it stepped up a notch, and it appears to have given me the tools to set a better boundary for him as far as what he is allowed to do with me while on leash. I can't BELIEVE how much attention and focus he had just after the 2 corrections that it took to teach him that he was no longer allowed to take off running and lunging with me..... it was amazing. I really thought the dog had no motivation or focused drive but something clicked, maybe the realization that there were consequences for ignoring, and so he was like GLUED to me, watching me, and even heeled very nicely ALL THE WAY DOWN THE STREET! And furthermore, many dogs passed including one he hates and he sure did just sit himself down and chill out. ! No commands, no correction, nada.... just left it all aloone. WOW.

Just remember to have the dog wear the prong collar at different times throughout the day when your NOT training.(supervised of course).
If you only put it on them during walks or training it wont take long for them to figure out you have no control without it. (collar wise)
They have to become so used to it that there isn't any connection to wearing it and corrections. That can happen in a short time.

Personally, I don't use a DD collar as a back up to my prong. Everyone does it differently....

I have a tab connecting my prong to his flat collar, or a Fur Saver. (which are much less bulky!) We're transitioning out of the prong right now as much as possible, and trying to work only in the fursaver. I leave a 4'' tab on the prong so I have a handle on my emergency brake.

Here is a picture of Koenig with his prong/fursaver/ecollar combo we wear on major training sessions. Other times we switch it up, ditch the prong, and or the e collar, just using the fursaver.
http://i23.photobucket.com/albums/b400/turnnburn52984/Koenig/photo-2.jpg

Like Bob said- it's really important to use it off and on, randomly, wear it while not actively training (but supervised) so your dog does not get collar wise, and realize when there is no prong= no control!

Good idea Bob, thanks... I was really thinking that today on our walk... the weight of it and the noise seems like something easily correlated by a dog. So, collar with no training sometimes......