Several years ago I did a lot of rewiring in the attic with junction boxes and thinwall and then fishing down the walls with romex. Now I would like to cover the attic floor with batts and/or blown-in insulation.

How can I mark the location of the junction boxes which will be covered with insulation----dowels, stakes, what??????

Whatever works for you. I like red plastic burial tape stapled to the trusses or joists and tied to the cable or pipe below the box.

This isn't quite answering your question, Limerace, but I go in attics where the boxes are almost always buried under insulation. Usually I can follow the thinwall to the boxes. It sounds like your own place. You could draw yourself a plan & staple it to the scuttle hole cover.

Dave