Originally Posted by LewBob
dcahn, A more upright stance moves your center of mass to the rear when you flex. Raising the heel within the boot moves balance forward while allowing more dorsiflexion. Lift under the binding heel gives more forward lean, weight and weight tilted forward without reducing dorsiflexion. With a skinny calf a spoiler is just filling in for meat that the skier doesn't have on his leg.
I don't think the issue here is limited dorsiflexion, but CM that is to the rear and a boot that won't flex well. Net result is skier fighting to get weight forward. Of course I could be wrong, but this is what I get from the description. Go back to "The Athletic Skier" and I believe you will find this is what Warren describes happening to many skiers. How to go about solving the problem is probably best left to a very good boot-fitter, but it is easy enough to experiment with trail maps behind the cuff or a little wedge under the boot liner's heel. LewBob
The absolute statements you make here are very misleading.
Fore/AFT balance point is a very indivdual issue affected by many factors,including but not limited to dorseflexion, femur and tibia length, lwoer leg circumference and shap(huge impact) strength, technique, body type, ski flex and sidecut shape, binding mounting position, binding delta, zeppa angle, forward lean& boot flex.
HH on the thread you referred to seems to completely contradict what you are saying here. I think Harald is pretty right on in his comments on that thread!
I have watched the boot fitter I use analyze many skiers fore/aft alignment. None have had their fore/aft alignment improved with raising their heel, 2 were already pretty relaxed and centered, the rest neede their toes raised.
Most boots still have too much ramp 7 forward lean, add the binding ramp to that and you are skiing on your toes which makes you stick your butt out, break at the waist and put your hips behind your feet to compensate.
keep in mind Wtherall's book was written before the days of shorter, wider very shapely skis. fore/aft alignment needs have changed drastically since then.