Kroll Does anyone know if Mr. Kroll had anything to say about Wilderââ¬â¢s Parabolic? I heard an unverified rumor that he may have used Parabolic to get out of one of his multi year, roll over, futures positions. Anyone care to speculate? Found Dragon in a routine Google search, plenty out there some over $150.00 used. ââ¬ÅIt is better to have a mediocre system and good money management than an excellent system and poor money management.ââ¬Â --futures trader Stanley Kroll