We had one lady come to the field with a 1/4 scale Extra 300S with a DA 50. She flew it twice and on the second landing, came in just a little short of the runway and nosed over. She was done flying for the day because her $30 wooden prop was cracked. I think I will stick to my 40 and 60 size planes for now, cause it would get mighty expensive if props cost $30 instead of $3.50.