[quote=Mr_Dove]i ended up making my own packets but it didn't work out so well. The contents were big and heavy. There was no way that a home-made seal was going to hold 7 pounds of potatoes and veggies.
My only question is...why 7 pounds
? How many people were you serving? I've made an entire meal for my family in foil and don't recall ever having that much in any packet. Sounds like you were aiming a bit high for only one packet. I'm curious to know.
I use the method thymeless suggested and have never had a leaking problem.