Replying to Connecting Boxes...

Right now I am in the middle of building two 8' long by 1.5' wide boxes for backyard use. I found a 4 X 8 sheet of Lexan in my basement, so I have the topsheet. I plan on making two seperate boxes so that we can change them up between a 16' flat, 8' flat 8' down, flat up, or and just a 16' up combination on a hill to slide up and slide down.

However what is the best way to make a connection between the two boxes when being used as a flat down kink combination? Any input from those who have done something similar would be great.
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'Thanks for ripping off my friend. He has a magnum.' - SkogenJake
'I was like a 13 year old girl meeting a backstreet boy' - Ski@Jaypeak2 ... on meeting Glen Plake