Hi Ian,
Probably a bit late but I've done some removable loads where the strapping coincides with the 4"x 2" that the load sits on and is glued underneath so the load and the timber lift off together. Like this one; http://www.flickr.com/photos/nicks_trainstuff/7515456218/in/photostream
Hope this helps.
Nick
Many thanks all for your kind comments - I won't respond individually this time due to SQL interference
The last time I posted I was on the brink of throwing the towel in and scrapping the whole layout (the sort of childish behaviour I am trying to prevent my kids from having!) but having rediverted my attention and the encouraging comments received I am glad I relented...
Thanks all