This might be a new thread but I almost always sail solo. On my h14 I have gotten into the habit of wearing a helmet. Just a bike helmet. I have been cracked on the head a few times and did not enjoy it.

I may look a bit sissy but that boom makes a big boom when it hits the noggin.

I started using the traveller and this reduces the likelihood of it happening but every so often I forget to adjust it carefully or whatever.