Why didn't arrow think of that? Well, remember this. Ron Toomer was a lazy designer. It's obvious in the horrid transitions that most arrows have. Not to mention, he basically bent a coat hanger and said wow, I designed a loop.
Lazy designer? Like you could do any better?... In reguards to the transistions, The newest multi-looper from Arrow is Tennessee Tornado and that opened up in 99! So if they are rough now, how well they are maintained has alot to do with it. And don't even get me started on the technological breakthroughs that have occured in the past 20 years in terms of train design, maintenance techniques, steel fabrication, and the overall coaster design process....Oh and if you honestly believe he designed customers rides from coat hangers then you are an idiot.