roof rack on fiberglass lip

[boldtu]

I am thinking of installing a storage basket on top of my 87'. I do not want to drill so I think that using an attachment that uses the lip on the top would be the best way to go for me. I have heard that the lip breaks off sometimes. What kind of load can these things carry before worrying about damage? I want to use a Thule or Yakima setup. I am open to suggestions.

Thanks,
Chet


P.S. thanks for the help with my power issue
I am taking it in for exhaust in a couple days