I am making a 2 wheel trailer for touring and I was reading this how-to guide and somewhere on that page it says that 1 wheel trailers can't carry as much weight but have better high speed stability. Then it states that 2 wheel trailers can carry more weight but have lower stability at high speeds. Why is this? I can't understand why and I have spent a whopping minutes self debating this but I can't come to a conclusion why... I'm also curious how one accomplishes right turns with a trailer hitch like this one.

TIA

Josh