I've got three 8612's on my new boat and trying to figure out if putting screen protectors will reduce visibility. The screens seem to have an antiglare finish which I suspect will be negated by the graph glass, which does not. I don't like the antiglare graph glass. Any thoughts on this?

On my HB Solix and Apex units I wouldn't run them without the graph glass protectors - they make cleaning extremely easy and don't affect viewing.