I keep having the same problem building my boardies. I have a nice bike assembly stand, but it is the type that clamps the frame tube. Works good when I start the assembly but as things progress I keep moving the clamp around until I have nowhere left to clamp. So I bought an automotive engine stand and modified it into what you see here, a stand that supports the frame where the kickstand mounts. Now I can put the whole bike together no problem, and I can roll it around the shop easily. Here I have a partially assembled Sportsman WZ Flyer sitting rock solid on my new assembly stand. Makes my life easier!
DSC06155 by Sportsman Flyer, on Flickr
Here you can see how simple the support stand is. Just set the frame in place and tighten the bracket.
DSC06156 by Sportsman Flyer, on Flickr
DSC06155 by Sportsman Flyer, on Flickr
Here you can see how simple the support stand is. Just set the frame in place and tighten the bracket.
DSC06156 by Sportsman Flyer, on Flickr