Watermarks & Copyright

Watermarks and copyright .

I have had to add watermarks to my work after recent events.How big does one make them that is the question.No -one wants to  ruin the shot for prospective clients to see your work ,or anyone else for that matter.I have seen some pretty unsightly watermarks on images that totally obscured your view and some tiny ones that would be nothing for a person keen enough to Photoshop it out.So as photographers what do we do? I have decided a small watermark across work that goes on websites not my own and strategically placed ones on work that goes to clients prior to them deciding  what images they wish to buy.