Aerotow launch failures are rare. Following a low aerotow launch failure, there may be reluctance by pilots to land ahead in a field and instead attempt a low turn. Following a low launch failure, landing ahead in a field is a safer option than stalling or spinning from a turn or hitting the ground whilst turning.
This S&G article by BGA Safety Committee chairman, Tim Freegarde, that was published in June this year, describes the topic in detail including the factors that influence pilots actions and the importance of preparation, including E for eventualities. The BGA Instructor Manual and The BGA Student Pilot Manual also provide clear guidance on the topic.