All my early flights were in South Africa, where low tow was the norm at my home field. I only remember one problem, when my heavily-ballasted Jantar-1 over-ran the towplane when it slowed on hitting a strong thermal. The towrope snaked over the canopy then passed over my left wing in a large loop.. I recovered just fine, but it did catch my attention!

I have had many more problems trying to maintain high tow in a fully ballasted Discus 2b and had several occasions where I ran out of elevator authority due to a slow tow, usually releasing prematurely. I managed to stay on once in such a slow tow, but sank into low tow position and had insufficient elevator to resume high tow at the speed flown. Maybe low tow has a slight aerodynamic edge with modern ships?

Mike