Gilbert Canyon lies along the southern edge of Georges Bank, one of the eastern canyons in the chain. It is a long run, but the Georges Bank edge is famously rich, and Gilbert holds the full canyon slate of yellowfin, bigeye, bluefin, marlin, swordfish and mahi.
The canyon
Fish the edge and the fingers along the bank. Being deep in the Georges chain, it is often fished as part of a multi-day trip working several of the eastern canyons.
How to fish it
Troll the edge, chunk overnight, deep-drop for swords, and work the pots and weed lines for mahi.
Tip The far Georges canyons reward a multi-day plan. When you are running this far, build a trip that lets you fish several canyons and the best water among them, rather than pinning everything on one spot.
Canyon-run safety The canyons are a long run into deep, open ocean, usually an overnight or multi-day trip far beyond help. Go in a capable, well-found boat, watch the weather window closely, carry proper safety and communications gear (EPIRB, life raft, redundant electronics), and file a float plan. This is serious offshore fishing.
Regulations Tuna are federally managed highly migratory species requiring an HMS permit, with category, size and retention rules that change through the season. Confirm current rules with NOAA Fisheries HMS before fishing.