Here's a manual - it may be the one you have:
http://www.hobiecat.com/support/pdfs/H16_Manual.pdf

The flared ends of the rails go to the front - the grommets on the tramp go to the back. Lacing goes down the center and along the back. I have seen it the other way but that is unusual. Why? I guess this gives you more tramp in the front where the crew sits. Usually - you will find skipper and crew forward more than back on a 16 (unless it's blowin like snot).

better tramp pic

Good Luck

RQ