My Hoegaarden clone recipe had me adding dried bitter orange peels (from lhbs) at 10 minutes before flameout. Shocktop has a different orange profile, so it may be sweet orange peel (more common) and a much more pronounced orange flavor (almost as if OJ is added to the beer). I believe they add lime zest and corriander too.
You may want to add a small amount of crushed corriander at the last 10 minutes. Corriander seed is often available in the mexican aisle of the grocery store at a very affordable price. Crush it in a baggie immediately before adding.
"You canít be a real country unless you have a beer and an airline Ė it helps if you have some kind of football team, or some nuclear weapons but at the very least you need a beer"
- Frank Zappa