ok so it's much harder to "game it" which is good. 
Like any other facet of any other rank, Hit% can be "gamed". Of course! It may be more difficult that some of the other components, but it certainly can be done...
And, like others mentioned, bombers are a good way to do that. You need to shoot planes to have bullets counted as hits while scoring as a fighter, and since bombers are big, mostly helpless, and don't dodge much they make easy targets... Beyond that, shooting them should also allow you to "game" your K/D, since once you learn the basics you should be able to shoot them down with little risk to yourself. It's been 5+ years since I checked, but my personal K/D against bombers was in the 80/1 range (and that was because I counted C47's as bombers, since they had the most "kills" on me; it should have been higher than that). Coupled with the 40%+ Hit% I was enjoying on them at that point (I wasn't as accurate on bombers as I am now) I could have had a nice K/D and a nice Hit% to go along with it.
Of course, that would have also lowered my K/T substantially, and probably my K/S unless I re-armed a lot (my F4U carries enough .50 rounds for 12+ fighter kills per hop, but I have trouble getting more than 4-5 bomber kills without running out of ammo). Another option would be to NOT kill the bombers quickly, but instead "prolong the agony" by distributing your hits all over his plane (allowing for more hits on each bomber before it dies).
For the most part, it's difficult to "game" any one aspect of your rank without hurting another, but if someone really wants to do it...
Other options less-often mentioned to "game" the various components of fighter rank are vulching (especially if you have a friend on another team or a second account), and bailing to avoid RTBing (fighting to the death accomplishes the same thing, but is seen as more "legitimate"). Or, you could carefully "select" which hops you wanted scored as fighter vs. attack. Or fly with a wingman, squad, or horde (which will allow you to use the skill of others to "pad" your K/D, K/S, and K/T (they help keep you alive, and you spend less time flying back to the fight). Of course, that'll help your points as well... And the perks you earn will allow... Ah, won't go there. Regardless, someone is always willing to argue that all of those options are perfectly legitimate (and they probably are).
Keep in mind, I don't give a rats bahooty what my rank is, or your rank is, or how we compare. So my Hit% is just that; my Hit%. It tells me how many hits I get on my opponents... As such, it's true value (to me) is a measure of my skill or improvement over time. I have enough respect for myself that I won't try to "game" myself.
