So, if I have the two rear seats of my 7 seater folded into the floor and the drawers installed over them, I could be booked for not having a functioning 7 seater 

Can you put the seats back in again? Then no.

The statement of "...removed for an indefinite period or are not expected to be refitted" can easily be argued that installing the seats when you get home from the trip or even before selling the vehicle is a defined period.

https://www.tmr.qld.gov.au/-/media/Safety/Vehicle-standards-and-modifications/Vehicle-standards/Vehicle-standards-instructions/L51.pdf?la=en

They both have the same water resistance (750mm hydrostatic head), but have vastly different breaking force specs. Question is what does that mean if anything in a practical sense?

I don't know for certain but I'd think that it would really only matter if your roof got hit by a branch or similar The "stronger" material should resist better, when the lighter may tear

This is a very light polyethylene material used for among other things dam liners (!). On the one hand I suspect walls made from this will pack down into a smaller space, and they will defiinitely be light and also allow quite a bit of light into the living space as well as being easy to care for. However being synthetic will be very susceptible to heat be it from direct contact with a camp oven or flying embers (hmmmmm already seems like a bad idea). I am also wondering if it would be noisy in a breeze?

Once again, I don't know but I'd think it would be pretty warm inside, which could be good or bad, depending on where you're camping! If it is a fire risk, then that would be a big No!

So, if I have the two rear seats of my 7 seater folded into the floor and the drawers installed over them, I could be booked for not having a functioning 7 seater 

We are replacing the tropical roof and awnings on our soft floor Metalian Maxi with a new design which hopefully will reduce setup and and pack up times.

The final part of the puzzle is the choice of canvas, however without knowing anything about fabric technology or much practical experience with different types of canvas which I suspect is not an unusual problem I am not sure which product to use.

So two application questions.

First up a tropical roof. Currently the recommendation is to use Wax Converters Billabong which is 370gsm dynaproofed canvas, but I spoke to a "mate" in the industry yesterday and he suggested using the lighter 275gsm Coolibah.

For the record the product page is here: http://www.waxcon.com.au/dynaproofed-outback-rugged-canvas-tents.htm

It seems to me that a lighter roof will have some advantages, particularly for ease of pack up. What I am not sure of is the relative performance or wear differences between them. They both have the same water resistance (750mm hydrostatic head), but have vastly different breaking force specs. Question is what does that mean if anything in a practical sense?

Next part of the upgrade is awning walls We have replaced the hugely cumbersome zip on pole supported awnings with a Bundutec three sided fold out awning that covers the kitchen and creates quite a large living area. The plan is to be able to enclose this on three sides with add on walls that attach via a 50mm velcro strip for privacy and weather protection.

The current recommendation is Canvacon from Gale Pacific: https://www.galecommercial.com/en_ap/product/canvacon

This is a very light polyethylene material used for among other things dam liners (!). On the one hand I suspect walls made from this will pack down into a smaller space, and they will defiinitely be light and also allow quite a bit of light into the living space as well as being easy to care for. However being synthetic will be very susceptible to heat be it from direct contact with a camp oven or flying embers (hmmmmm already seems like a bad idea). I am also wondering if it would be noisy in a breeze?

The alternative I am leaning towards is the Coolibah from Wax Converters, but the trade of is price (lots) and more care required to prevent mildew and other issues associated with natural fabric.

What say the brains trust on these two applications?

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