well, 1 pound of fruit per gallon is a very low threshold. You'll get color, and some flavor...not tons though.
I usually don't go more htan a month on fruit, just because the skins can add tannins, and sometimes it just gets funky sitting that long.
Primary: English Mild
On tap: Pale Ale, Lancelot's Wheat, English Brown Ale, Steam Beer, HoovNuts IPA
Bottled: MOAM, Braggot, Raspberry Melomel, Merlot, Apfelwein, Pyment, Sweet mead, Cabernet
Gal in 2009: 27, Gal in 2010: 34, Gal in 2011: 13, Gal in 2012: 10