beecrofter wrote:

snip

I hesitate running a sander over the floor.....

Might be your best way to get rid of interfering texture. If so, rent
a random obital sander. They remove material surprisingly fast and
usually have a hose to connect to your vacuum to take care of the
dust.

I have had good results by priming the floor with polyuerethane and
applying self stick tiles after a couple days drying, very hard to
remove after.

Second the motion on that procedure. I've had outstanding results with
polyurethane over decent plywood. Always touch sand it a bit to get
the level.

Joe