Anybody booking today for the Friday of a holiday weekend 8 months out is locked in and thus likely price insensitive. B6 and every other carrier knows this. No reason to discount seats now. That can always come later.

The issue is that later, the seats may have sold and there won't be any.

So the trick is to find that time when seats are low and plentiful.

If you knew that for sure, you could replace RM/IM on any carrier.