SOOO, is it really crazy, time-consuming to hop? Is there an ideal way to do it so you're not on a bus forever?
As others have said, honestly, no. Disney Transportation generally works pretty well, though sometimes you might hit a rough patch if something goes down. Waiting for the bus is the tough part, especially if you just miss one (and you don't really know when it was last by). It can feel like it takes forever, but it's pretty fast. Routes where you use the Skyliner or Monorail are ideal. In case you don't know, I'll lay out the Hopping options below:
MK <> EP - Monorail (transfer at Transportation and Ticket Center, to/from front entrance of Epcot)
MK <> HS - Bus
MK <> AK - Bus
EP <> HS - Skyliner (transfer at Caribbean Beach), Friendship (to/from the back entrance of Epcot), also a walking path
EP <> AK - Bus (to/from front entrance of Epcot)
HS <> AK - Bus
The Skyliner is super fast and the easiest way to get between two parks. MK <> EP and EP <> HS are the easiest hops to make. AK is a bit further away, so it's all busses to and from it. I usually pair AK with MK and EP with HS. Then again, I have been known to start at HS, take the Skyliner to EP, move from back to front hitting any attractions that I want to, then riding the Monorail to MK to close out the night - it's pretty fun!