Reged: 11/04/03
Posts: 5918
Loc: Northwest Washington State
No foil underneath the fish. I spray the grate with PAM, just so the fish doesn't stick (the sugar from the syrup will char and stick a little). The foil serves as a lid (my barbie doesn't have a lid); the foil goes on top to hold in some of the steam. Yeah, it kind of tries to blow off, but I "tuck it in around the edges of the grate, just a little. Don't cook it too long!
What kind of salmon are you grilling? Let me know how you like it.