Here's how I did it on my Generic Benroy. I Made a pattern from the side and made a simple jig with dowels.
The strips I used were simply 1/8th strips cut on the table saw from a 2X4.
The strips were glue to each other inside the jig. I let each dry overnight.
The shape was perfect and they have not changed since I made this. It was actually fun. I dreaded the hatch, but it turned out well.
Final product before skinning
