The act of finding them establishes interference, therefore whatever you have just found is definitely not Epicurean gods. Looking for such gods makes as much sense as trying to see an invisible elephant. If you see it, it's definitely not an invisible elephant.
There is nothing in Epicurean texts that says the gods are invisible.
Seeing "films" is not bodily contact (not interference).
Letter to Menoeceus says: "For gods there are, since the knowledge of them is by clear vision."
This is just what the texts say. I think it is up to each person to decide if they "like" (or agree with) this or not. I personally consider myself an atheist, so this idea doesn't resonate for me personally (just for the record).