Like I said, I'm only pulling when nobody is around, I'm not seeing a group of players waiting and then pulling. At best people show up at ~20%, which honestly perplexes me. Perhaps their intention is to reset it? I don't know, if someone told me an A Rank was up and half dead, I wouldn't bother running to it if I was on the other side of the fence.
Given that I'm told there are usually several A Ranks ready to spawn at any one time, how is my soloing actually ruining any enjoyment? People miss one A Rank out of the dozens that spawn daily, to people actively camping in that way I doubt the 50 Seals are that important, to me however, well, I already explained how long it's going to take me to get some freaking vanity gear...
I don't think what I'm doing is perfectly fine, however. I think the system needs a massive overhaul to accommodate either play style. Until that happens though, if I see an A Rank and nobody is around, I'll start soloing it. I should also point out that that is a VERY rare occurrence; as in, it's hardly happened half a dozen times since the contents release.
It's certainly a lot more fun than soloing maps. Not saying it's a massive challenge, just that compared to the rest of the game it's pretty much the best I can hope for. Honestly, I got enough of a lag educed zerg rush for Seals back in 1,x with the Atomos event...
Ultimately this is the problem with open world content; different people have different opinions, neither side is "wrong" for wanting to enjoy the content their way. This why developers should put some serious thought into the content, rather than rushing it out to appease a bunch of XI die hards. So few Hunt targets and such high rewards, that was a massive mistake on the developers side. Their "fix" only really compounded the problem by taking B Ranks out of the system almost entirely.