Thanks Pat, sorry no sister.
Robert, I am glad the photo's helped. I had trouble deciding how long to make the fence as well. I just decided to make it full length.
Roger, when you make a cut, the saw discharges the dust from the dust port built into the saw. By placing the 1 1/2 hose from the saw port inside of the 6" DC hose it creates extra suction at the saws dust port. Plus, by using the 1 1/2 hose, the dust is discharged directly into the DC's 6" hose instead of just into the hood.
Sam