Hahah, great comments... and don't forget the classic: "There is a bug in this next part that noone can find, good luck fixing your problem if you traced it here"
I don't believe I could function without knowing how to touch-type. I, like you, was pretty fast until I took an intro typing class back in high school. All I really needed was the concept of "home row" keys and my typing speed went over 150wpm.
If you don't currently type with your fingers on the "home row keys", that will afford you the ability to tough-type, imo.
Over 150wpm just by movin' to the home keys eh? I call shenanigans :)
I've been typing for 12 years with two fingers and my thumb for the spacebar, and I do around 70wpm. Retraining would slow me down for months. I can touch type in that I don't need to look at the keyboard.
Practice makes perfect...
Well, I was already over 100wpm before switching to home row. Switching to home row allows you to touch-type which allows you to type faster due to the fact that you're not looking at your hands...