I see the BGA NOTAMs as being no different to those we get about military exercises - be aware, something slightly different is going on.
All the other stuff is sort of valid in that we all have to share the sky. Yes, it would be nice for gliders to carry strobes, Mode S etc and, personally, I get the heebie-jeebies thinking about 'invisible' aircraft operating in the same cloud I may be in. This is all about personal risk mitigation and we should adjust accordingly. Personally, I wouldn't be cloud-hopping if I knew a competition was taking place.
PS. I flew a Twinstar to the East of Bicester the other day and was being overtaken by a glider.
