A combination of reflective tacks, scent dispensers, flagging tape, and (very judiciously) trimming back shooting lanes, should help you re-locate your trees. Before I got into saddles I made a lot of brush blinds; when I come back to a property I've hunted in the past it's not uncommon for me to say, "huh, this looks like a good spot to set up a... wow, looks like I already did!"
How blatent I go depends on how many other hunters I see on that property. I've never lost a tree, and I want to make sure I don't leave any litter out after the season ends.