Actually, I believe we are all mistaken, by definition from the thrillride glossary,
Immelman
Bolliger and Mabillard's term for their Diving Loop as used on their inverted coasters. This element is named for the airplane manuever invented by a German pilot in WWI.
So really, no sit on top coasters will ever have an immelman, since it only applies to inverteds.
*** This post was edited by FloridaCoasterRider on 6/5/2001. ***