Oh god, this tree. While it's one of my favourite things about Johto, it was so annoying. My first Pokemon game was Gold and I was as much a moron as I could possibly be (not that I'm not now :P). It took my days, yes days, to get past Sudowoodo. When I finally figured it out and it appeared, I thought it was a legendary Pokemon and used up pretty much every Pokeball I had.
I'll be honest though, I wouldn't have changed a thing. Those frustrating days I spent trying to get past the squiggly weird tree were some of the best days of my life and it got me into Pokemon and it's part of why I'm here today :P