here is what I did during radiation: bought some cheapo wash rags at Wal Mart and put them in seat of my undies- a few times I leaked just a bit...but the wqash rag saved the day...just tossed it if it was too much ( happened 2-3 times)..otherwise, just got in shower with undies on and rinsed everything out then put in regu wash.

I did have some significant fatigue first couple of weeks- radiation + ADT..but played thru and things did get better.. the ADT and radiation fatigue is real..but somehow if you get up and bike or walk or whatever, it retreats quickly...just be sure you were your small towel in your britches...so you dont get called 'Old Man Dirty' when you stroll thru Starbucks..;=)