Blood Thinners, bruising from shooting

[happy honker]

My hunting partner is a bit apprehensive about shooting this year, as he said last season he really had a lot of bad bruising from shooting, especially shotgun/birds...where we are shooting a lot more rounds than big game hunting.

We are going out this week to sight our rifles in and shoot some clays.

Any ideas on what pad we can put on his shotgun that won't impact his fit on that gun too much?

He says the bruising was so bad last year he couldn't wear a golf shirt or t-shirt at work.

thanks