Never tried maple before...
In the northwest states the big thing is cedar plank salmon.. Delicious
Have tried trout this way and also with several other 'aromatic' woods.
Maple is pretty hard though.. will have to soak a bit longer.
Lay it right on the coals and the light steam and heat will cook a little flavor into the food. Haven't tried it with bread/bannock though... will give it a shot next time!
enjoi!
edispilff