[OrangeLightning]

OK, I think I may actually have something here, although it seems a bit strange to me.

Taking the hint about just looking at the start I thought maybe just ignore all the lines that start with a \ and only use the ones starting with a /.

This left me with only two lines

/\//\\//5,1:4.1,2:8.1,3:2.3,3:2.4,3:3.7,3:3.1,5:3.4,5:9.5,5:2.7,5:4.7,6:6.3,7:3.

AND

///\\/JQEABTVKNUCSEYCMBILDKOSCYSITECPAGFAXHKETJNZURWCIE

I then split the letters up into a 7x7 grid like this

1234567
1 JQEABTV
2 KNUCSEY
3 CMBILDK
4 OSCYSIT
5 ECPAGFA
6 XHKETJN
7 ZURWCIE

and using the coordinates from the row of numbers to look up the corresponding letters I got this.

B K C B I K E A G A N R

which is an anagram of the word

BACKBREAKING !

Nice!!! That seems super promising!