Beer Belly (Thompson) Name Beer Belly Category Pacific Salmon Hook Size 6 to 3/0, Long Shank Tail Light Blue Over Pink Bucktail Body Silver Mylar Tubing Over Aluminum Underbody. *See Below Wing Light Blue Over Pink Bucktail Head Black *The underbody of this fly is formed by cutting a piece of aluminum can to shape and lashing onto the hook shank. Place a drop of cement over the lashes. Then a sleeve of silver braided mylar tubing is slipped over the aluminum underbody. Secure it at the head and the tail. The pattern for this fly, came from the fine book by Bruce Ferguson, Les Johnson, and Pat Trotter, Fly Fishing for Pacific Salmon.. They write that this herring imitation, originated by Irwin Thompson of Sebastopol, California was developed for taking deep-feeding chinook salmon.		.