House solar panel on 4x4 roof

Hi All

I'm looking at doing a poverty solar installation and would appreciated any input.

Don't want to spend a fortune and am relatively time poor. Troopy still has AGM's. Yeah, I'll rewire it one day and install Lithium.

Wanted to put a house panel up top. I can get a new 450w (or there abouts) for low $200's.

Controller is wired in car, Anderson plug on bull-bar. Yes, controller can handle that wattage and voltage.

How to mount is my question.

I can't fit my car where I park under the house with a rack on. Have a full sized ARB rack, but at 65 kg and myself heading towards 60, it isn't as easy to get on and off by myself anymore.

I have two old rhino racks which I think might be the go. Maybe the heavy duty uni strut length ways, and 4 lighter weight uni strut cross braces.

I'm just planning on running a lead from panel to Anderson plug manually when parked up.

Not looking to angle it, yep, I know, hugely more efficient. Then need to carry a ladder. At 450w, lying flat in the Top End, I'm hoping I'll get enough juice.

My man concern is the panel just falling to bits the first lot of corrugations I hit.

I feel the centre of the panel needs to be supported, not just the frame. Thoughts?

Thanks for your input.

cheers

Lyndon