Overun
"How many members of the national squad over the last 30 years have not been professional pilots one may wonder,"
I dont know about over the last 30 years but of the British team flying in the european championships this year only 2 out 12 were professional pilots. The others included a Builder, a graphic designer and an army officer.
I take by professional you mean being paid to fly. All of the team I consider very professional in their ability,skills and judgement.