Winterizing- rv antifreeze vs. blowing out lines

I think folks on these forums are 50/50 divided on this topic.

I've got a new TT this year, so I'll be doing both. Actually, I'm going to try something different this year.

1) blow the lines out first
2) pump the pink stuff
3) blow out the pink stuff (so it will all go down the p-traps and holding tanks.)

Water lines should be pretty empty, but pink residue left in the lines can be seen through those plastic lines. I'm curious just how much REALLY get's blown out. So, I'm experimenting this year.