I bet this is for the SAE electric class. They held it at my club last year. Lots of hard landings, crash's, and a few folded wings. I think the ones with canards or lifting tail surfaces, though none of those won. Too many other factors, such as wing or other parts of aircraft design, piloting skills, and wind went into wininng or losing. Before competing be sure to train in a overweight trainer. I would suggest a SPAD or the Aircore trainer as they take a lot of punishment and are already a bit overweight.