North America: Anyone have experience with this new, improved tow
hook based upon the Schweizer hook? Your FAA Approval process?

From the catalog at www.aircraftspruce.com (see photos there)

Aircraft Spruce Pilot Supplies - Towing Equipment
GLIDER & BANNER TOW HOOKS

These tow hooks are available in two models. One is a bolt-on tow hook
with a mounting lug which is ideal for attachment to a tail tie down
point. The other model is a weld-on tow hook designed to be directly
welded to a custom mounting bracket.

These two hooks are similar in design to the Schweizer manufactured
two hooks that are no longer available. Design improvements were made
to increase emergency release capability at all towing loads and
angles.

These new tow hooks have greater release arm leverage and a unique
hardened roller release design to reduce release force at all tow
angles. Additionally, the geometry of the tow hook housing was
improved to keep the tow ring in the optimum position to minimize
release force.

FAA approval can be obtained for the complete tow hook and release
system by following the guidelines in FAA Advisory Circular 43.13-2A,
Chapter 8, titled, "Glider and Banner Tow-Hitch Installations" and the
included tow hook installation instruction.

Description Part No. Price
GLIDER TOW HOOK (WELD ON) 13-04974 $302.81
GLIDER TOW HOOK (BOLT ON) 13-04975 $340.40