My hamstring routine usually consists of only ghrs and stiff leg deads, but a few times a year I will do a 3-4 week mesocycle of only stiff leg deads (short and sweet) after squats or front squats in the following format:

Bar x 30
95 x 25
135 x 20
185 x 15
225 x 12
255 x 10
275 x 10

I am in week one of my cycle of test e, deca, hgh, with a drol kicker, so I figured it was a good time to start the hamstring mesocycle. My hamstrings are my fastest growing body part and are also my slowest recovering so I need to pick and choose so I don't overtrain. Every week I do this routine I am sore for the entire week. My entire hamstrings are completely blasted from top to bottom. If you have lagging hams or want to try something to change up your routine you should definitely try it. Let me know how it goes!