I have a feeling we could cause new PPLs (who are used to a tower) to worry more than necessary about going to non radio or a/g airfields.
I think a very quick call giving your position and your number in traffic (if you know it ) is important, but you could be in a mix of non radio aircraft so just slot in the pattern and keep a good look out.
I have been to a few fly-ins where it was safer when the A/G just gave up and the drivers sorted it out.