1. Season fish fillets to taste with sea salt and place into a shallow glass dish. Whisk together vinegar, olive oil, lemon juice, garlic, and rosemary; pour over fillets. Cover and refrigerate at least 30 minutes.

2. Preheat an outdoor grill for medium-high heat and lightly oil grate.

3. Remove fillets from marinade and shake off excess. Discard remaining marinade. Cook on preheated grill until fish is opaque in the center and flakes easily with a fork, about 4 minutes per side.

Charter Fishing Lake Michigan -- Port Washington Charter Fishing for Chinook Salmon, Coho Salmon, Rainbow Trout, "Steelhead" -- Van's Catch Sport Fishing near Milwaukee and Sheboygan.