This was my last experience with suspension on my 2012.
I was going on a long trip. I packed all my stuff and stood on the scale with saddle bags in hands. Total weight 260 lbs me and my gear. I also had a tent, sleeping bag and bedroll attached to the rear rack so I figured another 30 lbs.
My rear sag is usually set at 45mm. I adjusted the preload to the middle bar so the bike was level again with all the gear loaded and me on it. I could tell by the mirrors and where the headlight was pointing. This should make the bike handle similar to when its unloaded. Its sits the same. No further changes were made for the trip.
Next I was heading down the slab for the first day. I wanted a nice smooth ride, trying to dial out the expansion joints. I set the rear damping to 2 turns out from H. Ride was good. I stop every hour when traveling so one stop I went to 3 turns out which would be minimal rebound damping. The bike went up and down with every bump. Kinda made me sea sick. Back to 2 turns out for that part of the ride. Later in the day when I was going through Cleavland the bike was a little hard to handle. road was rougher, traffic was busy and I was not liking it. SO I turned the rebound in 1/2 more turn. This left me at 1.5 turns out or about the middle. Things were better. I had more control of the bike and was not getting the bump twice. Still getting a pretty smooth ride.
Next was some riding in the upper peninsula of Michigan. I turned the damping in to 1/2 turn out from H. Almost all the rebound damping it has. Handling was good even though I had all my crap strapped on the back and saddle bags full. Twisties and bumps were good. No bouncing or wallowing in the corners.
That night I set up camp. Everything was off the bike. I went to fetch a steak for dinner. Bike was bucking me like crazy. I got to feel all the bumps, ride was rough. I was still at the setting for twisty roads and loaded bike. I just put up with it, I was only going to the store.
I rode 2,000 miles in 7 days. Too much on the slab (about 1/2), but the ride was good no matter what i was doing.
Each has their own taste to suspension.
Preload, makes bike level. Not much to change once its there. Keeping the front and rear balanced helps the bike handle best it can.
Rebound makes for a stiffer or softer ride.
The rear tire must follow the contour of the road, so rebound has to be adjusted to conditions you are riding.
Don's page is good.
The sport bike page is also good.
Read all you can and make adjustments to see what they do to the bike.
In the end, solo riding factory settings are pretty good.