So, for you experienced riders, what are some tips and tricks you have learned for staying comfortable on long rides? What does the best posture look like? Are after market seats worth investing in? Are floorboards counter productive to comfortable riding? What are the best modifications to make to ride comfortable?
There is no 'best' position. You sit in the greatest chair of all time and, sooner or later, it's gonna get uncomfortable.
My suggestion is, on long rides, move. Over a 300-500 mile day, I'll be all over the place. Forward, back, left ass cheek, right ass cheek, legs splayed, one at a time, both, both in, toes out, up, sit kinda perpendicular. I rode 100 miles in Texas on a rented FLHTCU sitting on the back seat. I'd do it on my Strat but, I have a back rest.
Highway pegs are a must. A good seat is a must. Cruise control is great but, not a must. You're really not a 'true' rider until you're sure your right hand is DONE and then do another 200 miles. And not even notice it. Same goes for your ass, legs, back, neck. Call it Zen, call it warming up, whatever you like. Long rides on good roads, becoming lost, absorbed in the ride, man...