roof rack on topper/light question

[gmcdawg]

Wondering if anyone has some actual experience with mounting a roof rack on a fiberglass topper?  I am looking to mount a rack, possibly the one linked below, on the topper of my 2018 crew cab short bed.  A few questions...

 

How did you mount to keep rack as low and close to the topper as possible?  I don't like the rails and bars with rack on top, puts way too much up high, limiting parking garage use and adds to wind noise.

 

If I wanted to mount a light bar or lights to the front of the rack, with it being just at the back of the truck cab or maybe extending a bit forward of the back of the cab - would they throw the light forward or wash out on top of the truck cab?

 

I can speculate all day long about the light question, wondering if anyone has any experience with light placement a little further back than front of cab.  It's not a necessity, just wondering if it would be  a waste of effort time and money.  My main reason for the rack is some light cargo, side and rear light mounting point (functional for when I'm working past optimal light and want side and rear lights run off secondary battery), and looks.

Here's the rack I think I may use

 

http://www.smittybiltdepot.com/Smittybilt-Exterior-Parts-Accessories/Smittybilt-Defender-Roof-Rack-45555.aspx?t_c=3&t_s=82&t_pt=3426&t_pn=S%2fB45555

 

 

 

[patrick taylor]

Looks like this one is mounted forward. Is that not an option?

[Donstar]

I used various forms of roof structures and found the height to be too problematic.  As you said, parkades can be a problem and I have the added issue of ferry height on the upper vehicle deck.  The height is also a problem for loading, unloading, securing.  I found a little utility trailer to be the best option on for those rare occasions the bed area is too full.  There are many light mounting options designed specifically to illuminate a potential work area.   I agree that roof carriers can look really impressive but they lack in practicality (and tend to be noisy), imo.