Dry Hopping a Biere de Table

Hi!

I made a second runnings beer from a batch of wit. I fermented it with a tube of White Labs Bastogne yeast. The OG was 1.026 and is now registering at 0.099! I have half an ounce of whole cone crystal hops left from the brew. I want to dry hop, but I am not sure how much or how long… Thoughts?

Dan