how much does current matter?

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Original poster: ben eells <squeels2171@xxxxxxxxx>

In my attempt to build a more powerful tesla coil I have come across 
this question. How much will the output current of your NST affect 
the length of your streamers. I'm using the program Tesla map to help 
design this coil and it calculates the max streamer length by the 
output wattage of the NST. Unless I'm mistaken output wattage can 
never be higher than input wattage. If this program is correct, and 
I'm sure it's not, I wouldn't need a transformer at all. So what is a 
better way to determine max streamer length given the output voltage 
and current of a NST?