Look everyone... What was the last airliner with a tail wheel...last bomber, fighter...or even general aviation aircraft built with a tail wheel. They quit building them and used a nose gear configuation for a reason. I mean the whole aviation industry world wide did.
So, I realize there is a challenge argument or a slight speed argument...but the entire aviation industry world wide has made the decision what is the best configuation. I assure you Boeing is not stewing over whether the 797 will be a tailwheel configuration.
How narrow minded! Nose draggers are great if you want to go from pavement to pavement, but once you get past that and start exploring, you quickly find that extra prop clearance and gear strength open up all kinds of options in the backcountry.
A cub would really suck with with a nosewheel, and if you think low and slow isn't part of GA, then you are seriously missing out.
Anyway, onto the OP's question:
NOT ALL TW INSTRUCTORS CREATED EQUAL. (sorry, not meaning to be rude, but it's important)
I got instruction from two different people, and I learned more in 2 hours from the second guy then I did the entire time I flew with the first.
Also, tailwheel isn't hard, but it does require you to fly the airplane well, not poorly then stop flying the second you hear the thud.
I was taught like this:
Use the rudder to keep the airplane completely parallel with the runway. Whatever happens, pitch up, down, whatever, do whatever you have to do to keep it parallel.
Use the aileron to keep the airplane in the center of the runway. If you drift, use the aileron, while keeping it parallel with the rudder.
Use the elevator to set the pitch, and the throttle for altitude until you get good at understanding what you need for tail high, low, or 3 point then mix/match.
So if you want a wheel landing (better for crosswinds) you are doing to use less elevator and a flatter pitch, but more throttle so you don't sink too fast.
If you have a serious cross wind, well, you will find that keeping the airplane straight with the rudder, and into the wind with the aileron will give you a one wheel then other wheel landing, just like you want.
It's not rocket science, but it does take some skill, and it's very rewarding.