What projectile weapons are you using? Are you using fixed or gimballed?
I prefer fixed cannons (and plasma) to gimballed cannons. Even on bigger ships like the Anaconda, Python, Corvette, Dropship, and Gunship, aiming is just a matter of practice.
Frag cannons are a bit different, I run those fixed only on ships agile enough to consistently get in close, which tend to be small ships.
Multicannons I just generally don't run fixed at all. Multi's need consistent time-on-target to be worthwhile, and gimbals just do that better for me. Cannons/plasma/frag I can line up a shot squeeze the trigger, and have a short reload period to line up another - they just work better as burst weapons, and so are easier to use as fixed.
(Although I have had fun in all-fixed-multicannon Vipers and Eagles, they are not ideal for me, but they are good for learning good combat habits)