MarauderIIC

There are zipper “fitted” sheets that avoid this problem

Yeah my post was about adding one that is big and bright even to games that have one

Often it’s reported that a larger and/or brighter crosshair helps. Maybe try an overlay with a large neon pink crosshair or a piece of clear tape with a big dot of marker on it sometime? I get it’s probably not a problem that you are interested in putting time into solving any more though.

My partner and I find it a bit awkward with just two of us

As I recall, the ‘campaign’ gets impossible to do with two players because of the inability to look up enough stuff in parallel. There are mods and custom bombs though.