I find its more useful if you have an idea of what you are searching for first…trawler…tug etc etc
Re expertise of build quality, I think you will find that mediocrity is alive and well at most ponds! photos are or can be misleading, NOT that I am suggesting the quality of build is anything less than Raquel Welch in “MB” magazine you understand.
I have been to shows and generally the quality is stunning, but there again, they are exhibiting at a show.. I have, unfortunately, no models of “show” quality, but they are all tidy non-the-less.(and mostly a bit different)
My local stationer/print shop has a truly massive copier that can enlarge plans to whatever you want , and I have used them in the past for various projects.
Ashley