We do use a LOT of our horse manure and it works out really good for the tomatoes, peppers, chilis, summer squash, cucumbers, and pumpkins (normally), but I just cannot get any watermelons to take out here. Usually, everything else grows like crazy but that hailstorm killed almost the entire garden this year. We do still have a lot of green tomatoes, and I'm debating on whether or not to try my hand at fried green tomatoes before the plants start dying. Might be worth a shot, even though I'm a terrible cook. :)
I've found that putting golf balls in the nesting boxes gets the hens and pullets to lay their eggs there. I had to take them out when Penelope and Calypso went broody on me, and everyone started laying eggs in crazy places, but they've all been laying in the boxes again after the golf balls went back in them.