Pah wimps. In my day it didn't count unless it was wood and had struts.
And a 500k had to be an FAI triangle - none of the 80km yo-yo things.
Not to mention living in a hole in the road - did I mention I went to school in Leeds?
Actually, although my logbook last records a Skylark 2 in 1972 I recall it as pleasant enough to fly, adequate soaring glider on a half reasonable day and less of a strain to rig than the larger 3 or 4. I echo the advocates of taking a wood experienced inspector to look at one.