There was a typo above..
www.986forum.com These issues are asked/addressed ad naseum over there. Not too many (although the list grows) of Boxster owners over here to ask. Lucky, Tony, RickV and maybe 5-6 others.
IIRC, Porsche designed the rear spoiler to go up at a certain speed because of the stability it offered, not just for the appearance. Maybe if you are going fast enough for the spoiler to be raised you should be concerned about being "caught"
I thought about the SmartTop at one time. Then I saw how much they wanted.. Then I realized just how infrequently I needed to raise or lower the top while traveling at speeds below what, 20mph?