I am now building the canopy structure and wanted your suggestions. To make the canopy flush on all sides is a major project. Is it worth it or do you guys have some tricks you can give me?

1) Should the canopy hang over the rear top deck or not? If so then is it worth making it flush?
2) Should the canopy be flush to the sides or let it drop down over the sides?

Thanks - I could have never built this thing without your help.