I find that using a small hairdryer helps, as it dries the CA glue before the solvents in it have too much chance of fogging. I find this preferable to using CA activator as it doesn't weaken the glue and helps to keep it reasonably clear as well (activator often tends to turn CA glue white).
Beyond that, very neat pins through the bases and models' feet are pretty essential IMO.
If you are overly-worried about CA glue fogging up, you can use a little dab of 2-part epoxy glue instead, but I would still pin the models anyway.