Back in the 80's, the Islamofascists thought it would be cool to launch an air strike on Israel. They chose Quicksilver-type ultralights as the weapon of choice, because the tube and fabric construction would make them invisible to radar.
The gunners manning 'Vulcan' AA guns on the Israeli border heard the 2-cycle engines closing on their positions, and opened fire; shredding ultralight and would-be martyr for Allah alike, in a hail of 20mm fire.
Thus ended the last attempt of the Islamofascist to use small RCS to their advantage.