Princ: I would strongly suggestif you haven't already, begin a workout program. It doesn't have to be a lot but it helps immensly to stay active. Also watch your diet, there is a tendency to pack on the pounds.
I've been on Lupron for 18 months and had only minor issues, I attribute part of that to doing the above items.
If you haven't already pick up a copy of Dr. Snuffy Meyers book "Beating Prostate Cancer Diet and Therapy". He does a great job explaining the response and effects of HT.
There are a few people on this site that claim that they will never do HT but then again they haven't had to face the hard facts. Also you can always quit if it causes too many issues.
Dr. Meyers gives a general opinion and exlpanation of how individuals respond to the treatment based on nadir PSA and such. He also talks about intermittent HT.
Good luck and keep us informed.