The key to getting positive return-to-zero with any receiver cover mount is in the fitting. Done properly, they work very nicely. Done sloppily, they don't.
I bought mine many years ago shortly after purchasing a brand-new Chinese SKS. I fitted it carefully following the directions and it's worked perfectly for me over the last almost twenty years. It's held its zero after removal and replacement with no perceptable shift and continues to do so after literally thousands of rounds and dozens of removals.
The easiest and most 'fool-proof' cover mount I know of is the B-Square, if you're not planning to switch back-and-forth with the original cover. It adds a step to the take-down due to the screw setup that replaces the latching pin, but the installation requires almost no skill, as no material needs to be removed. A couple of drops of Loc-Tite on the adjustment screws after initial zeroing and you're done. Its system has built-in compensation for wear and it can be switched over to any other SKS and rezeroed. All you need to do to return your carbine to 'stock' is replace the latch and install a new roll pin in it.
Since you want to use the scope you already have, one of the 'scout' mounts is probably out of the question. They need a long eye relief model to work.
There used to be at least a couple of variations on the QD rail and mount setup the Soviets used on the Moisin, Tokarev 38/40 and Dragunov sniping rifles sold for the SKS. I don't recall seeing any around for several years, but they should work well if the rings are compatible with your scope. It would likely be best to have a 'smith install it, should you find one, as the receivers on many SKSes are very hard. A mistake, like having the drill wander or break or snapping a tap off in the hole, is easy to make and hard to fix.