When the race starts, there will be a randomly generated filename. Use that name. If proof is needed, show a picture of that your file with the Triforce completion symbol and with the correct filename.
This is a RTA (Real time attack). You are timed by real time, not the in-game timer. You are allowed save and quit. You may also use multiple files too (ie a Corrupt File) as long as all the files used are created during the race. That way, the time to create the files is counted towards your race time.
Yes BiT is allowed, but of course not required. Because BiT loads information from other files, you may not have any other files with data on it. So all three of your files will start initially as either New Adventure files or New Hero Mode files.
Personally I use:
File 1) New Hero Mode <-- I play on this file
File 2) New Adventure <-- I will Corrupt this File
File 3) New Hero Mode <-- Used for a later run
But any combination of New Hero Mode and New Adventure files is ok.
If you are unsure how to copy New Hero Mode files, check:
http://www.zeldaspeedruns.com/ss/misc/opening-empty-files.
TriforceBrawl: I will try to move my plans, that I can do the race at 10am on the Sunday. Friday and Saturday are completely out for me.