Personally,
I have never contacted an HV line(touch wood!), this is probably because I am careful, but, this sort of accident is always in the back of my mind when doing Glove and Barrier Work.
You can only have so many covers on the lines and then they start to get in your way during your normal course of work.
The biggest problem I feel with regards to Live work at HV levels is when you are mucking around with live tails to DDO fuses and Transformers, being stranded, they have a will of thier own, this causes the majority of Live line accidents.
[This message has been edited by Trumpy (edited 05-25-2003).]