I'm trying some Poa Supina seed this year to fill in some shady, damp areas in my yard. I overseeded TTTF two years in a row and these are the spots where the TTTF just couldn't hack it - either too much traffic, too little light, or a combination of those two worsened by moist clayish soil.
I'll try to post up some pictures. I fenced off a part of the yard to keep off foot traffic, lightly raked to loosen the soil and spread and walked-in some seed.
I also collected some soil in a cup and I will try to germinate it in my window to see how it does under near ideal conditions.