I thought the benefits of isometric training tends to cease after about 6-8 weeks of use (Schroeder / Medvedev)? Or given the varying types of isometric training do members feel that there application period can be extended and shortened?
Here is a link to an article by Charles Poliquin:
http://www.stud.ntnu.no/studorg/styrke/program/v47_ecc.html
An italian version:
Christian have you ever tried these.
Drop off high box into half squat, pause 2 seconds explode up as high as you can and land onto another box. Turn around and repeat.
I find those excellent, just wondering what your experience has been with them.
As a matter of fact I did those yesterday 
I use a variation in which, upon landing, a partner apply force on your shoulders (pushing you down) for 3-5 seconds, you resist the force then jump up as high as possible.
hehe cool idea. I am also toying with the idea of a weighted vest doing these as well.