Your ging to get a ton of differing opinions, but when I brew SMaSH beers it is to get a sense of the flavor and aroma of a certain hop. I just did a Simcoe SMaSH and did 60, 20, Whirlpool, and Dry Hop additions. I use about 4oz per 5.5 gallon batch. This last one I did .5oz @ 60, .75 @ 20...