When hunting (or in the field in general) I always carry my day pack ... so, in my pack, I carry a few sets of the little spongy ear plugs on a cord that connects them together ... If I have the time, I'll put them in ... but if not, I'll take the shot anyway ...
any/all other times I'm shooting, I either wear some of those type plugs, or I put on a set of over-the-ears muffs ...
I've tried the amplified (and high-decibel sound dampening) muffs before, and while they work, they are a bit more of a pain for me because of their size ... I would like to try some of the really nice 'fitted' in-the-ear "game ear" type plugs, but have not yet done so ... perhaps one day ...
