Spindelberger wing cuffs for tiedown; severe winds

I want to be able to leave my glider assembled and tied down all
summer, with Jaxida covers on it, but am concerned about how to secure
it against the occasional severe winds we get at Minden.
Spindelberger makes fiberglass wing cuffs that look similar to the
cuff used to attach a wheel under the wing for ground handling, but
that don't have the wheel and that have some hooks on the top to
secure a strap that would go over the top of the cuff and then would
be tied to a metal cable on the ground.

Does anyone have experience with this particular product? I have two
potential concerns. First, will using them on both wings put undue
pressure on the ailerons/flaps? Second, is the cuff rigid enough so
that even in severe winds that try to raise the wing, the rear of the
cuff won't bend down and put unwanted pressure on the ailerons/flaps?

I couldn't figure out how to attach a picture of the Spindelberger
cuffs but, as I mentioned, they look just like the cuff used to hold
the wing wheel for ground handling, with the addition of the loops on
top to hold the straps in place. They cost 178 Euros each, plus
shipping.

If you want to reply privately, I can be reached at


Mitch Polinsky
"MP" N223MP (flying out of Minden in the summer)

Message from Alfred Spindelberger follows:

Some of our customers prefer this glass-fibre wing cuffs as seen in
the attachment. The are foam- padded and have two eyes for the belt.
They are EURO 178 each, including the belt
I recommand to use 2 Wingstands when you tie down your plane.

Mit freundlichen Grüßen
Best Regards,

Alfred Spindelberger