As several others have stated, it does take some time to adjust, relax and ride the machine. We both struggled on our first few rides, my wife actually did better than I did, she's much more chill than I am! I'm not sure a short test ride would have changed my mind or sealed the deal, I'm glad we made the "leap" without the test ride truthfully. The dealer did have an F3 and Ryker, as well as the two RT's we purchased sitting in the showroom. the RT's just felt right, not perfect but really good. With the addition of the sway bar/ends from BajaRon, helibars, pedal commander, backrest, airhawk and taller windscreen, it fits like it was built for me, my wife says the same thing about hers

hyea:
Once I felt more confident and comfortable on the RT, I really starting enjoying the ride and time/miles just fly by. Pulling onto a gravel shoulder or parking lot (still concerned about rocks in the belt) are no sweat, having reverse and not having to worry about tipping it over/picking it up ... priceless. The first time I dropped a big bike (yamaha venture royal), injured my back and shoulder trying prevent it from happening.. was the last time I owned a big touring bike.
Before ours were delivered, we completed the 3 wheel training required by WA state. The "hands on" time was spent on Rykers blasting around one of the parking lots on the Boeing campus in Everett. It was fun and gave us a taste of the three wheel experience. I would highly recommend taking a course like this prior to hitting the road with a can am. Funny note, one of the other people (only 4 of us) taking the course ended up purchasing the F3 that we climbed around on!
Sorry, to answer the question. On our previous bikes (klr685's fully fitted for ADV riding) 500 plus miles was unpleasant, on the RT's I feel great after a full day and ready to do it again the next day.