I know this is almost a year old, but I'll add my two cents.
I now have 8.5 years with our toy hauler, 2010 Cyclone. Our models with the 10' garage so it only has a 7' ramp, shorter and steeper.
Several things I learned early on.
1) You have to be prepared and deliberate on your loading attempt, a couple ramp approaches, make sure you are lined up and go. Hesitating halfway is a recipe for disaster.
2) Several storage ideas inside and I have settled on Condor wheel chocks. Flat out the best and easiest to use. I no longer even bolt them down. I use 2x4' or 2x8's in front to block them against the wall.
3) Premium straps are worth the money. I use M&R 1" ratchet straps.
4) Backing down - right hand wrapped firmly around the grip - no front brake. Bike in gear and clutch all the way down. Has already been mentioned previously, but trying to stop backing down the ramp using the front brake can be embarrassing or injurious.
I have Screamin Eagle Electric Glide, so it may help a bit that it has a hydraulic clutch
Once the rear tire is at the ground and you are getting ready for that air gap I just 'go'.
5) One time - only once I tried to load in from wet, bit muddy grass - never again. I ran 8 gauge wire back to the garage and have a small remote control winch in the corner of the garage. I use a pulley to change direction and will use the winch any time it may be questionable loading.
2016 season we were sitting at our RV when a toy hauler pulled in next to us. Not very friendly from getting out the truck but hey whatever.
They open the ramp and the bitching starts, their cheap HF straps on the dresser snapped and the bike fell over into the wife's Road King, which snapped it's straps and fell over. We offered help - were turned away and watched.
Backing out the Road King none of us suspected or expected that the front brake reservoir would have been dry. Once on the ramp and only using the non existent front brake made for a harrowing 10-20 mph ride backwards down the ramp. He finally fell over about half way in the fairway.