Dave,

You are correct that the narrow/thin wooden ramps could be a problem. Not had any issues thus far. But I have thought about replacing the wood ramp with some aluminum U channel (left over from my old home built trailer guide rails) which would keep things in alignment. Or some aluminum flat stock attached to the outside edges of the wooden ones.

As to the wide/thick ramps I am less concerned about things sliding off. Again, flat stock (or U channel) attached to the outside edges (tops) could be added.

That same U channel could be bent to form a copy of the Cobra "workshop rails". Bottom line is that I use these ramps only twice a year (spring updates) so the expense of the Cobra rails isn't justified. The other issue is their length - my thought would be to add a hinge.

Finally, I looked at the solution on the web site you mentioned. Can you help me understand what is meant by "...ramp jack hinge pins...". My jack is not hinged, nor are the ramps - they whole assembly only pivots at the trailer rear. Might be a motorglider thing?

- John DeRosa (OHM Ω)