i honestly don't know why my tournaments are so terrible. it is very frustrating. i haven't figured everything out obviously or i would be shooting in the 60's in my casual rounds. i do watch some of the videos in the link erik sent a few pages back and practice often. I'm hoping to play in some SCGA event since they are cheaper and maybe get more tournaments in to calm the nerves or whatever is going on with me in tournament play.
It's simple, your swing is not reliable under pressure maybe a little bit of nerves but I doubt it, I'm sorry to be that blunt but it's the truth. I saw the videos and there are numerous issues that are going to take real time and effort to undo but it can be done if you keep your focus on just a few things at a time. When you say my driver does this or my 3 wood does that so I think I'll go figure this out at the range you need to realize nothing can be done to fix the issues your talking about with a couple buckets. I'm being nice when I say this remember, but you need to get simple with your practice and work only on the drills Mike and Erik gave you and nothing else.
I am not that consistent either, but I do know that any inconsistency is due to a fundamental swing flaw. The drills I am doing are progressive. I start with the basics with every single range session or even on the course.
Just yesterday, I was getting frustrated with toe hits again (The impact marks were only about 1/2" to 5/8" off the sweet spot, but it stings a bit when using my training blade irons), the solution? Practiced Key1 with pitch shots until I got comfortable. Turned out I was picking up my head too soon. Once I got within 3/8" of the sweet spot, I progressed to key 2. Of course, I was already getting my weight forward at impact, but I did not focus on the finish until Key 1 requirements were satisfactory. Next, I would focus on the finish in Key 2, and finally on to Key 3, which is the main emphasis of what I am working on, and the fact that I am changing things here meant that I needed to change the way I did things in the previous two keys (remove flaws).
It's a slow and progressive process, and every time you feel that something is not right you can fix them through the basics by going back a step or two, and doing your associated drills and exercises.