Trainers » Rocky Helmet | Abilities » Smooth Coat
If Cinccino with the "Smooth Coat" ability also has "Rocky Helmet" attached to it, can I choose to activate Rocky Helmet first, and then flip for Smooth Coat?
You would need to know whether Cinccino takes damage or not in order for Rocky Helmet to work, so in this scenario you would have to flip for Smooth Coat first.
Source: TPCi Rules Team (2012-03-15)
Trainers » Rocky Helmet
If Rocky Helmet is attached to a Pokemon with an effect such as Donphan's "Exoskeleton" Poke-BODY or a Defender attached, will an attack that normally deals 20 or less damage trigger the effects of Rocky Helmet or not?
If the net effect of the attack results in zero damage done to the Defending Pokemon, Rocky Helmet does not trigger.
Source: PUI Rules Team (2011-12-15)