As far as "hard" data, quantifiable, I think that will be slow to come. Plus, getting data on soft-tissue injuries is going to be tough, and to be able to attribute these injuries to the poly/synthetic/etc. surface is going to be extremely difficult if not impossible.
Any data on the new surfaces are going to come from a much smaller sampling and as such might be inconclusive. I am all for reducing breakdowns. I think we are seeing different "problems" (so called problems) at different tracks across the country. I still haven't seen the hard, quantifiable data where most (percentage) trainers dislike these surfaces. Sure, there are very vocal voices of displeasure, dislike, etc., but I am not sure if that is reflective of the majority or what size group.
Kickback, weather, moisture or lack thereof, and several other issues need, and will, be addressed. It's still very new, and there will be a lifecycle to it.
Eric
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