Here is a quote from an on line September fishing report from the Worley Bugger Fly Co. in Ellensburg (the fly shop and guide service I use all the time in eastern, WA).

The days of throwing hoppers tight to the bank are nearing their end, but where one food source diminishes, a new one opens up. The two hatches that will happen throughout the month of September are the Crane flies, and the Baetis mayflies. Both of these offer exciting dry fly opportunities into the fall. In October hatches of big, bright Halloween (October) Caddis will begin appearing along with Mahogany Dun Mayflies. At this time, skating a orange bodied caddis imitation provides some excellent dry fly fishing time while surrounded by unbelievable autumn colors.


www.worleybuggerflyco.com

As indicated in other answers, yes, there are times when we do 'swing' or 'skate' flies. Ain't fishing great?

Larry ---sagefisher---