yes, as opposed to singles or bakers and considering that the Japanese have been fishing this way for a decade and a half and that they design all the trebles and single hooks we use, the choice obviously works for them.
It isn't just the Japanese though. The boys at Le Poisson Banane who would arguably have as much expertise on GTs as anyone out there swear by trebles and they've used everything.
Do not misinterpret what I have written - the point I am making is that I believe the argument in favour of single hooks here has gotten a a little myopic and that a view seemed to be forming here to dump all your treble hooks in favour of singles. Luke stated he did otherwise and so do I. I am not even espousing that trebles are superior but that there is a clear place for them.
if you believe that the baker is the rig for you, the you go for it.
You may think that the treble hook sitting under the belly only has one hook exposed. Firstly, you don't need to rig it this way as you can opt to rig it with two hooks exposed. I, however, rig it the traditional way but I have observed quite clearly over nearly ten years that it is not always the exposed hook point which you refer to which is the one that hooks the fish and the reason for this is that GTs often pick the time to hit the lure at the point at which the lure is not moving (between pops) and at this point, the treble is hanging straight down.
This is the reason why another way or rigging (developed by the French or Spanish I think) of using an assist hook off the towing point of a popper is proving to be successful. Nomad have recently picked this up from their new guide, Glanville. If you continue to reel the lure constantly without stopping, the assist hook is nearly always running down the side of the body with little hook point exposed but when you stop, it suddenly drops straight down and it very exposed.
If your reason for using singles is also driven by the damage to the fish argument, I am inclined to agree that I have seen more damage done by trailing trebles than singles but but I would point out that the worst damage I have seen has been done done by a single. If this is a concern, you can of course opt to simply use one hook off the belly and a spinner blade off the tail.