It may be difficult for people to offer advice on your latest ideas, Donal. It depends on what and how you are planning to build (size, weight, layout, etc.)
However, if you go to the Design Resources and click on the design library, you'll find some help there.
Or, click on this:
http://www.angib.pwp.blueyonder.co.uk/t ... tear00.htmScroll down about half way and you'll see help on trailer balance and even some tongue information that, I believe, is based on the new IVA (Individual Vehicle Approval) British trailer rules. You can thank Andrew for that.
Best Wishes on your build and don't forget to post pictures!
