I also had tp....the blank bale worked for me...however I had to shoot the arrow. That hold and let down routine didnt work. Its like trying to reprogram a computer but only applying half the new programing. (ie the holding at full draw but not shooting the bow, the program never reachs gets all of the information it needs to fully operate) It may work for you....your mileage may vary
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Get your concentration away from where its hitting for awhile...every day YOUR HOLE SESSION! To work on form and form alone, one thing at a time. I was told and prefer to do it eyes closed up close. But whatever you feel comfortable with is fine. Eyes close eliminates the NEED to 'see' what IS/ISNT going on..Ie arrow kicks, hits right, hand rotates, short draw, short hold whatever.....once you take it to the next level and start to feel your shot, you'll understand.
It took me a long time of head beating to admit I had it, so you're on the right road. And the desire to fix it is commendable to say the least! Heck just admitting you have it alone is huge. Keep plugging along and dont give up.
Little story....
The year was 98. I had just shot my first Alaskan Dall ram the day prior and was on my way home when I noticed a very large interior grizzly feeding aimlessly on blueberries. Well the stalk was on. I reaked like sheep (which btw is a misnomer, reaking like sheep is bitter sweep as a bowhunter lol)....it was quite interesting to say the least. I managed to sneak within 18 yards of, an again very large interior grizzly. Fish and game in the area knew of the bear.
The bear fed and stopped but knew something wasnt right and stood. Imagine 9+ feet tall of mean big toothed large clawed carinvore with an attitude problem and you smell like mcdonalds frenchfries to a teenager on a friday night. I had the wind so there was no chance he smelled me, a supersized dinner, and I hadnt moved in a little while either. When he came down he went back to berry feeding....I found myself at full draw shaken beyond belief. Auto pilot took over when the shot window came and honestly the moon should have been more scared! I dont remember drawing, but I remember seeing him hit a perfect opening leg forward, everything was right..... its embarassing to say I missed....but looking back, thank the lord I did! imagine a wounded large interior grizzly and now you get to track him...just because of TP. I never found the arrow...I had to have shot a foot or more over his back and down the mountain side.
That was a changing moment for me. the day after killing my first Alaskan ram, went from the ultimate high a bowhunter could have, to a bowhunting career ending low!
dont let it take control of you. Its a mental problem that needs to be fixed with a mental remedy. No gizmo gadget or toy can do this. Only time behind the bow practicing form and doing it right! If you need something to tell you to fix it, it wont work. If it does, it wont last when you take it off. If you believe you can fix it..you will.
Stop shooting for accuracy and start shooting for form for awhile. Dont shoot for a short period and than expect your TP to be gone...it can take weeks, months or even years! Obviously we love to hunt so you'll have to come to some kind of agreement with your TP adversary around this time of year if you cant whoop it before season. That year I told myself I wasnt hunting if I didnt fix it....needless to say I put in extra effort to beat it.
When you stop fearing where the arrow is going to go....what your body is OR isnt doing...you'll beat it! It's not a fear as much of some kind of concious recognition of something or lack their off. (accuracy for most, or in your case time at anchor..fill in the blank with your "disease", the out come is still the same).
Now I hold so dang long I almost went into a reverse TP...kinda like falling asleep scuba diving underwater. Its so relaxing I just dont want to let go LOL! I'm not worried where the arrow is or isnt going to go. I feel pretty comfortable in my tuning and shooting ablities. That site picture at full draw is a snapshot of my life, why ruin it
...and yes, I have fallen asleep scuba diving waiting for the next class to get in the water and on the platform. Those were the days LOL.
There is no fast cure for this and likely you'll revert back to it from time to time. It's going to be a constant game of cat and mouse. The better you lick it now, the faster and hopefully easier you will lick it next time...or better yet keep it from happening all together!