Can I use Colored Polyurethane to cover blotchy staining
We have a dining set (pine table, maple&birch chairs) where the stain is very blotchy with light spots and dark spots. I think it's because they didn't condition the wood prior to staining.
The problem is that they have varnished the table and chairs and I really don't want to strip it.
My question is, I use a coloured polyurethane such as Minwax Polyshades, to darken it and hide the blotchyness, without removing the coat of varnish?
They have some really dark stains that I hope will hide the blotchyness of the table. Would I need to sand or treat the existing varnish beforehand so the new poly coats stick better?