its not necessary to stop. just need to alter some things. I would start by deleting useless edge lines, as long as they dont change the appearance. it really isnt hard to apply these techniques. it takes away from the easy of sketchup a little bit but it will pay off rather than leanring a new modelling program. go here: http://sketchup.google.com/intl/en/down ... ugins.html
and start looking. there are plenty of free plugins, n easy to install, just read.