If you are still enjoying the pursuit then I wouldn't quit. There is so much good advice that has been given it is hard not to repeat what has been said. I don't care how good of a hunter a person is, if that person is hunting in a poor area the success rate will show it. A guy can't kill something that is not there.

It sounds like you have all the gear now so you might as well use it. As long as it is fun I would encourage you to keep trying. I have a couple of buddies that hunt elk with bows. One of the guys has not ever killed an elk in over 25 years of trying. The other got his first last year after something like six or seven years of trying.

Whatever quarry one is pursuing often times the hardest one to get is the first. So much can and does go wrong. But when everything comes together it will seem easy. If you served as an officer in the NWTF you should have some connections with successful veteran turkey hunters. Perhaps you could tag along with one and see if you learn anything new.

Let us know what happens. I wish you well.