Correction: These ARE available at WingsAndWheels:
https://wingsandwheels.com/cobra-workshop-rail.html

On 4/20/2021 8:43 PM, Dave Nadler wrote:
On 4/20/2021 4:04 PM, John DeRosa OHM Ω http://aviation.derosaweb.net
wrote:
A few more details as to construction can be found at
http://aviation.derosaweb.net/presentations/#ramps

Careful, the dolly could slide off sideways and drop the fuselage...

Cobra sells some inexpensive bent channels that go over the raised end
at the jack, very easy and effective - unfortunately not shown on their
web shop nor wings-and-wheels web site. Quick and safe to roll fuselage
dolly in or out of trailer solo.

If you have the taller jack for a heavy glider see one idea he
https://groups.google.com/g/schempp-.../c/Rm5u0WVOE6k

Hope that helps,
Best Regards, Dave

PS: If anybody is interested I could post some pictures of the Cobra
ramp extension in a few days.