Yes, NL & BF still have the potential to leak due to penetrations thorough the clamshell. And I too would tend to minimize the number of penetrations through the most susceptible surface, the roof. Unfortunately, I got my BF off a dealer's lot after the original company went bankrupt and so had to take it as it sat ... with a ladder, roof rack, AC, refrigerator vent, 2 plumbing vents, 2 fantastic fans, and two skylights. However, these are items all TC tend to have and the fiberglass clamshell design does eliminate the seam along all the edges between the roof, sides, front, rear, and bottom and their leak potential. I hear all the time about the problem with wing rot on such units but have never heard of this occurring on a NL or BF.
