We mechanics all tried that years ago...then we all bought the tools. The price has come down quite a bit along with greater availability. On most engines, when an impact doesn't work, you can use a breaker bar, and then "bump" the engine using the starter, but those 4cyl Honda's turn CCW, so the bolt would just get tighter.
As for semi-deep sockets, I'm pretty sure Craftsman makes them too, not just Snap-On. and speaking of which...
ANYBODY, can walk up to a Snap-On truck and buy stuff, next time you see one parked somewhere have a look!
GW