Creating storage space in back of hilux

You are limited in length with the dual cab try but that just means you dont have to reach so far.

remember too that with dual cabs it is all too easy to put too much weight beyond the rear axle and to overload the rear axle with relativly small amounts of weight.

what is very common is for people to replace the sliding or fixed windows with hatches to allow direct access to stuff.
the mod that commonly accompanies that is the fixing of a shelf / box set up the width on the wheel well......there are all sort of combinations of this that can include battery boxes, water tanks, toll boxes and storage pockets.

the problem with storing anything high in the flexiglass and similar canopies is that they have very little inherant strength

To put a meaningfull roof rack on one of these things, some sort of internal or external hoop structure has to be contrived.

One trick that I stole off my brother is ceiling mounted fishing rod storage.

I have two bars across the interior roof of my canopy...one bar has plastic electrical saddles that takes the handles of the rods, the second bar has elastic tornau tiedowns and buttons with fuzzy padding to secure the shaft of the rod.
I have an 8 foot canopy..so I can store a good variety of shorter rods whole with the reels fitted and rigged and a mid length surf rod broken down, all inside.

cheers

I went to Bunnings to buy some plastic tubs that I put the kitchen, first aid, tools and other gear in. They have latchable lids. Under $10 each. Stack up and should keep out most dust. Can get some with wheels.
I did build a false floor out of ply and slide the boxes under there. It also has hatches so I can access stuff through the side hatch windows. Just tarps, ground sheets and light stuff go there, but the boxes work with or without the false floor. ( I just put the floor in to create a flat bunk space if required without emptying or moving the tools etc.)

Another cheap idea is a poly sewer pipe. Glue a fixed end on one end and a screw end on the other. Good for rods or poles or other stuff. Pretty dust proof. It is possible to put a lock on it. (I used a shed hasp and staple latch) and the pipe went on the roof racks. Took a few heavy knocks. In the end the pipe snapped but the rods were fine.

Maybe you could hang an elastic cargo net from the ceiling for the mats you can drill holes in the fibre glass and use blind water proof pop riverts with some silicon to mount brackets off and one hook at the rear to loop the net over to stop things falling out the back. Mount some fishing rod holders to the side even if they end up either side of the window it shouldn't be a problem you might have to space them out a bit. Riverts won't hurt the canopy I've used them when I worked at tjm at customers request. I've bought white riverts at bunning before or you can colour them to suit.