While Surfcasting I have only left behind Rod Holders. Have lost quite a few Braid Scissors, Pliers and bait elastic over the years. But they mostly get buried in the gravel, or left in the surf zone and buried after releasing a fish. So I doubt it would make much of a difference.
A few weeks back I left behind was my kayak paddle worthed around $500, and I would of left it meters from my car. Today I nearly lost my Spotter sunglasses, got back to the car and realized they were nowhere to be found. But luckily I left wet footprints on the rocks so could retract my steps exactly.