Just put a Luna lander fork on my fat tire bike works great can not feel bumps or cracks any more. Ride mostly commuting, makes the bike taller and longer.
All I saw at the expo were expensive european style pedal assist bikes with 250 to 350 watt motors which go 15 mph. It was like they were embarrassed to enjoy 3000 watts with a throttle. The best thing I saw was a Z bike in the parking lot.
I have rode my first 500 miles on my ssr sandviper a 500 watt fat tire bike. No problems what so ever. One bolt fell out of the rack attachment. I am on the heavy side so I could use more power, but that is not the bike's fault. Great bike.
I was riding up a hill at the end of a very hilly 23 mile ride with a 500 watt motor with a 10.5 battery. On this last hill the motor quit with one bar of voltage showing. I turned off the motor and kept pedaling up the hill with great difficulty. After a while I tried the motor with level 1...
Harbor Freight sells a 400lb motorcycle rack for a 2inch reciever which I welded a upright steel bar to which I installed two rings. You have to use straps, but it holds all weights and tire sizes for $125.