I'll add my questions here because I plan on doing some 2up riding soon as well.
I've riden with only 2 people on the back. My sister and my sister-in-law. My little sister (just a few years) totally sucked at it. I tried being really smooth, but at every stop, she ended up sliding down into the rider seat with me forcing me to smash the goods against the tank. I think she just didn't want to touch me. Probably has something to do with the years of living in the same house! She also almost made me dump the bike will sitting at a light. She jerked around and pointed to something. It was all I could do to hold it up at that point.
Now my sister-in-law was like wearing a backpack. She rides with her husband a lot so it's all normal to her. I want my wife to take a few rides with me after the new baby so we can spend some quality time together. Just out to eat, maybe a movie, or eventually hit a slow cruising backroad to a mom & pop dinner.
so...here's the list I've gathered so far...
1. Have her hold you close so she can feel your movements and mimic them
2. Keep her arms around you
3. Avoid really slow maneuvers
4. Instruct them not to make any sudden moves/adjustments (especially when going slow)
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