Given that since starting this thread I've made a spreadsheet of my exploits, I can now confidently answer that my number is
351 - about 100 higher than my estimate earlier in the thread. These include 81 from Speed: No Limits, 84 from The Smiler, 30 from colossus, and 28 from Nemesis. Side note, what's up with you guys above? 70 rides on SAW? Are you feeling alright?