That was my interpretation of the term. The wall skirt is has much less friction, so it's good if your craft is slow, and you have already enough power to hold the weight. What I've found is that if you don't have enough power however, the skirt collapses. This could be caused by a drop in battery voltage, too much weight, etc.Ah, then it's probably my fault that I misunderstood. I'm not very familiar with skirt terminology. That being said, is an edge/wall skirt one where the hole is much larger, thus creating "edges" or "walls" on the bottom of the craft?Oh, I'm sorry, I misinterpreted the definition of a bag skirt. I defined a bag skirt to be one with a hole that only had a hole the size of the bottom fan, directly underneath it.
But if you had a bag skirt w/o any holes, wouldn't you have a lot of friction, since there's no air flowing underneath the hovercraft to reduce that friction?