Hmm. You're right. My full keeler's shaft comes out of "the deadwood" (actually just the steel hull) nearly "flat", whereas my fin keeler is a good 15 degrees below 90. I don't get propwalk with the full keeler, but I didn't notice to this point because I have been preoccupied with its less than effective ability to back down in reverse!
I use the "coast into the slip" method even more now, because the dynamics of a full keeler are very different than a fin keeler in both subtle and gross ways.