Not sure if this is the best place to post but has anybody had experience with this build?

http://www.puppet-planet.com/theatre_diagrams.pdf

I have made two other puppet theatres. The first one made of pine was great, but far too large to transport easily. The one I have currently has stood for two years, and is made out of PVC pipe. Three problems with it:
1) Too light, so it gets blown around if using it outdoors.
2) Has been left in my car too many times on a hot summer’s day and has slightly warped.
3) Some of the joints have cracked through misuse and abuse through workshops.
The theatre above looks okay, but I would modify it to have top and side curtains around the puppets themselves. I think it looks to open.
Also I would make it slightly wider. I sometimes use three puppeteers and it can get quite squashy.
Just wondering how sturdy this is.
Otherwise, can somebody suggest anything better?

Anybody? No experience or alternate ideas?

Looks good to me. Thanks for the link.