Hey, thoughtful flyer, any experienced instructor will be able to tell from your flying whether or not your logbook entries are credible!
We had the pleasure of two old boys turning up at Shenington a few weeks ago who hadn't flown gliders for years and years, yet in a weeks course they were solo again and very pleased.
I am not happy with the notion you could buy a fancy self launching sailplane, take off from your farmstrip, and go swanning about without oversight of some sort.