Mine does not hinge but fits under a rain guard so there is no gap for rain to get into. The rain guard is the tan part (waiting for warmer temps to paint it).It's captured on the sides with the bottom trim boards and the latch keeps it secure. You could attach some cord or chain so it hinges...
I could live without my chop saw but not without my Kreg pocket screw jig. A speed square and a circular saw is almost as good as a chop saw for 90's and 45's.
JT