Hello folks, new to the forum. And just got a New-To-Me 2008 Hallmark Guanella, its going to need some racks & exterior storage. What is the best way to mount these items? I’m more a less a competent DIY’er, but don’t want to damage the integrity of the panels. Thinking about having a shop do the work, but not confident they are familiar with the Hallmark construction. What you think?