the way i did them before, was the center baffle was easiest just place stuff on each side then slide baffle into it and then run a bead all around each face of the baffle. The next two are harder to get into, so i placed a thick bead all the way around then pushed the baffle into it and ran a bead all the way around the other side and repeated this for the other as well. This time, I am going to do the baffle closest to the wall of water so that it is the most sturdy and then the other ones.