they're not as easy to get red as people normally think. At least in my experience, they don't get taiha as much as in 3-5 (both flagship). They may need to spend some times in PvP to a somewhat high level though. If you are not a newbie, your other 5 ships (BBs and CVs) often annihilate the enemy before they can do any harm to the AOs.
The drums piles up for non-newbie players. If you don't do events on Hard (and many Hard player doesn't use them, depends on the event), you get them monthly (2 per month quest I think? one old quest and a newer quest, or is it the quarterly one?).
As I read the comments on the wiki, it seems there are quite a few people who use this tactic. Of course it has its cons, but that really depends on people's opinion. I normally don't use it but sometimes I do get mad at 20+ tries off-route or ABC route, this will come in handy. I mention this so OP may try this later sometimes and see for him/herself if it's worth it.
(also because Nozomi said "the only way to even get a chance"... so I have to point this out, it's not the only way.)