The net pot made the difference with growing Hoya soidaoensis.  Within a few months I was able to see good root growth and moved from a two inch to a 3 inch net pot.  After the roots were growing all through the 3 inch net, I wanted to move it into a hanging pot, but I had a choice to make.  Did I want to risk damaging the roots by trying to remove it from the net pot, or should I insert the entire pot into another pot.  I chose the latter, and it kept growing with no set back.