Takinitslow, a trip to Little Bay is one where you might want to just plan and pay for a charter trip. You can catch a route taxi there (easiest and least expensive way from Negril to Mango Hall or Little London and then bike taxi it to Little Bay) - but - once in Little Bay, you're either going to do some marathon walking (without knowing what there is to see or where you're going) or you're going to wind up hanging at where you got dropped off and not doing much else. Car taxis are not plentiful in the area and arranging a driver from Negril to drop you off and then pick you up later would make no sense. Little Bay is a place where you poke a bit here, poke a bit there and take whatever comes your way without rush nor expectations. If you've never been, it's worth checking out but truly is nice to see with someone who knows the area.