Hi Peter,
Sorry for the late reply - I've only just seen your post.
I had a prostatectomy 10 months ago. As I'm sure you know, everyone's experience is different. For that reason, I would encourage you to read lots of diffferent posts.
I was heavily incontinent to begin with and am only now starting to see the benefits of the pelvic floor exercises. So don't give up on the exercises. I also started doing a lot of walking and have recently started a Pilates Exercise Class to help with pelvic floor strengthening.
I'm also taking 5mg of Tadalafil (Cialis) daily and am using a vacuum pump daily. I haven't seen much progress with erectile functioning yet, but other people on this site who are more experienced have encouraged me to keep going. I can sometimes get pleasure from masturbation after pumping (but not always).
Please don't give up. It got better for me and I'm hopeful it will for you too.
Good luck.
JedSee.