It's a question of taste
Simply, I do not like static training, period. Why because I get bored and I m too much of an "hyperactive" type of person. As I am not interested of freediving with the use of any mechanical aids it is simple to see where I am going to.
No matter what some may say, STATIC TRAINING WILL NOT IMPROVE YOUR DYNAMIC PERFORMANCE. It may help psychologically but that's it, period. I personally train my mind while doing dynamic training, I relax while I dive and try to think that I am somewhere else, in fact the other day when I reached 50 m in the pool I hit my head against the pool's wall (something really silly which could have triggered something worse). I guess wher you are in the "blue" some principle applies, relax, dive, relax and fly.
Regards, gerard.