Congrats on M101! You will love it!
I made my lid from a 16 ga steel, I bought a standard 10' sheet.
Here is a diagram I used (from another member on this forum)
which was very helpful!
First, I brought the sheet metal to metal shop and got it cut to size i need and bent, and after made a rectangle base out of 1" square tubing that I welded on. After, the remaining 2 side came. I braced the lid from the inside (2 braces) and its strong enough to hold the RTT. I bought weld on hinges and attached the lid to the trailer.
Gas shocks came last. I used a pair of 250 pound shocks and find them strong enough to lift my 100lb lid and a roof top tent. (will take more detail pics of shock brackets as well)
I will try to take more detailed pictures of it from inside and will post them later today for you.
Hope this gives you an idea where to start with.
Thanks, Sam
Sent from my iPhone using Tapatalk