What's the trick for loosening bed side screws?

[designrama]

I’m looking for tips on loosen bed’s four side screws for tramming process. H2S has no side windows, so you can’t see the screwheads. Registering wrench tip into the screwhead is almost an impossible task.

[philch]

That’s my trick, the fingers feel the screw head so the hex is centered you then just rotate slightly until it engages and use you second hand to unscrew