I personally use the Komodo 471p for slow jigging. It works well, but you do need a new handle. Gears are bigger than the Trinidads so there's a lot of torque. Fished with it in depths up to 400ft at Colonet and had no issues bringing up fish. Biggest fish was a 8lb Mexican rockfish. I haven't used it for yellowtail while slow pitch jigging, bit I've used it to fish traditional irons and it cranks the yellowtail in.
So the stock power handle not long enough? Where did you get the longer handle?