I finished my first Fizzy Grid (the difficulty/terrain chart) last month when I was on my way back from Point Pelee (GC8NE61, D5/T3), and I've promptly started my second loop since. I really enjoy the fizzy grids, mostly because they lead me to so many great trees to climb and puzzles to solve.  



Here's a tree I climbed last week, for GC80NJK (D4.5/T5). Do you see me clinging for dear life at the top? 



How about now?