While weight may help stabilize the top sheet, it seems that is a hit or miss thing, where and how much is indeterminant ....I have the FWC installed Yakima racks with two heavy Zamp solar panels [160/170w] and two Fantastic power roof vents [fore and aft] yet the booming continues and is unpredictable in terms of wind velocity or direction. I have never heard it while driving and top down; my assumption is that down and latched the top sheet has more stability.
I was joking about the sand bags, but in retrospect I may try carrying 4 bags with about 5lbs of sand in each and with a long lanyard to place them and retrieve them once top is up when there is high winds.....pushing up the top with 20+ more lbs would be tough...place them and drag them off before dropping the top with lanyard [line]..
OK....somebody contact FWC and try to get a straight answer....adhesive or tape securing top sheet has seemingly failed; no good solution, since I do not want a new top sheet with all the mountings I have in place for my solar panels..alternative, not for me since puncturing the skin of my Hawk is a no-no, would be screwing the top sheet down to the roof frame...yes, I am paranoid about water leaks from screws or fasteners of any kind putting holes in the Hawk skin..
Overall, we love our Hawk and it has been tough and functional....but not good to be blown off by FWC when problems occur..silence may be golden, but not good customer relations.
Phil
Edited by Wallowa, 24 May 2023 - 01:21 PM.