Ed,
I have a box trailer, but never use it. It's too much of a hassle to park for some jobs. I like to have everything in the van.
Also I can only tow 750kg unbraked.
Rob,
I have a gx390 now and Im just about to buy a big 30lpm boiler. My PW hose reel holds around 60+m.
I also need room for my gutter vac when needed(I dont carry it around with me all the time)
Matt,
Good idea about a fabrication place. I'll look into that.