As he began to experiment with this technique, he gradually adapted it to make himself more comfortable and to get more height out of it. Nonetheless, it was nowhere near as coordinated as a well-performed straddle method jump, and one historian has referred to Fosbury's early attempts as an "airborne seizure", but during the latter part of his sophomore year and the beginning of his junior year, it began to produce results, and he gradually was able to clear higher jumps.