Hello. I thought I would take a moment to clarify some things.
First, the main purpose of the bent (metal endpin in the normal place) or Laborie Endpin, (placed near back edge of bass at 44 degree angle in new hole or with KC Strings Alt. outside block) is to allow the bass to be held in a more "open" position (see a picture of Rabbath playing), without having the instrument feel heavy on the left thumb while playing in the lower positions i.e. first position.
The main reason for having the bass more open is too allow the natural weight of the right arm (bow) to access all 4 strings equally. An added benefit is an easier transition to and access to thumb position for the left hand as well as easier weight transfer to the fingers in thumb position. The initial feelings of instability disappear after a while. (Also, to move into thumb position, all that is necessary is to bend at the waist, allowing the torso to move closer to the upper positions, without changing anything else, including the angle of the bass, or the length of the bowarm.)
The technique is not a mystery, and is no long even controversial. It works. If you are not open to it, that is entirely your choice. It is, however, logical and very freeing.
I was a moderately talented orchestra player for many years. I always wanted to play with a free and beautiful tone and to be unhampered by my technique, but I always felt like I was up against a brick wall. The Rabbath technique has freed me to realize my own potential. If you want to see what I have been doing lately, check out my website at
http://www.lloydgoldstein.com For a long time, my main goal was just to be able to play a beautiful, singing melody with the bow. Now that I have worked out for myself the basics of Rabbath's approach, I feel that with time and practice, I can do anything I want to do. It is up to me. It is true that no technique is a substitute for practice, but there is no reason to hamstring your efforts with a primitive technique.
Another note. The bent or Laboire enpin is not really intended for sitting, though some may find it useful for that. It is certainly not necessary in the orchestra. This is one of the reasons why you do not see the big orchestra guys with holes drilled in their orchestra basses. And the comparison with Rostropovich is absurd, because the purpose for the cello angled pin was to change the angle of the instrument, and that is not the purpose of the Rabbath approach.
For those of you who think that solo playing is for the .01% of players, think again. Anyone who wants to can play gorgeous melodies on the double bass, that will make people weep and wonder why they ever listened to the cello or violin. If you want to, you can. The technique is readily available.
Lastly, Rabbath has worked out a way to cover the whole instrument in 6 logical positions based on the harmonic series. It makes the bass feel much smaller and less daunting. I just met a man from Quebec who has done the work systematically and makes it look easy. Soon, I will make it look easy too. This year a new DVD called "The Art of the Left Hand" will become available. Then there will be no excuses.
Finally!!! For those of you really interested in learning about this "new" approach to freeing yourself on the double bass, instead of criticizing something you really don't know a hell of a lot about, I advise you to purchase the groundbreading DVD, "The Art of the Bow" by Rabbath, produced by Hans Sturm at Ball State University, and then you will learn.