RE: Tight Hams
I get tight hams after SLDL's, even more now I'm doing sldl and ham curls together. I also play ice hockey so I'm very stiff in the legs most days of the week.
I find thorough stretching of the legs (not just the hams, the lot) after workouts and hockey games helps unbelievably, along with the same stretching routine every morning after my shower. First I start with the lying ham stretch (as you've described above AR) then I do seated single leg (the one where you put left leg out, right foot at left knee and reach for toes, then swap). I stretch my quads one at a time (standing) then my calves. Then I do butterfly stretch for groin, then put legs out in front in a V as far as they'll go and reach to one side, then the other, then straight ahead. Then I repeat a second time.
There's a few important rules to stretching though which make it so much more beneficial. 1) all stretches should be done to the point where it feels a bit tight, but DOESNT hurt. 2) you should never 'bounce' - you should go smoothly to full stretch, hold, then release, and 3) hold all stretches for 20-30 seconds, none of these pissy 5 second stretches.
Follow something like that and I guarantee you you'll feel better by the end of the week. :)