Another fan of fermcap-style foam preventers here. Got some from my LHBS to make starters easier without boilovers, and lo and behold it works great (like 7.5 gal in an 8 gal pot, no foam at all great) in the full boil as well.
I only just discovered that an additional 2 drops per gallon helps tame kraeusen during fermentation too, so I'll be trying that with my RIS brew tomorrow.
Primary: 2013 EdWort's Apfelwein | 2012 JAOM 3-gal | 2013 JAOM 5-gal
Bottled: 2014 Peach Sauvignon Blanc | Rich's Legal Wit | 2013 Fireside Barleywine | 2007 Oaked orange blossom mead | 2013 Kit Cabernet | 2012 Kit Raspberry Merlot
Kegged: Sierra Nevada Celebration clone | 2014 Peach Sauvignon Blanc, sparkling
On Deck: Black Cherry Ancho Chile Mead | Leffe Blond clone