Well, I managed to somehow beat Luigi's coins before I got to read this post, but I did it similarly. I never thought to use the spin move, though. The long jump was my best friend, although I can't tell you how many times I died doing a ground pound instead. When I finally managed to get 100 coins, I was, of course, on the opposite side of the world from the star and desperately tried to make my way back. I got right near Luigi's shoe and did a huge long jump, and it wasn't until I was in midair that I realized that I'd already stepped on all the platforms in that area. Luckily, there was a single, solitary platform I'd jumped over at the beginning and, somehow, through God's grace, I happened to land on that exact platform. From there, it was just one more long jump to victory. Phew. I hate the thought of having to do that again...

Yeah, and I also did the trash blowing up in Dreadnought. It was frustrating, yeah, and it took me a lot of tries and a lot of cries of anguish, but I didn't think it was that much harder than the one in Battlerock had been. At least they don't kill you when you lose. It was the purple coin challenge in that level that killed me. I remember one time I actually got there, but I missed the last four coins without knowing it. That nearly crushed me.

Well, I'm at 113 now, trying to catch those three damned space bunnies...