In a previous life, I used to teach a CLD level class using this book, and enjoyed it a lot -- Some of it is certainly outdated at this point, but I think it still has a lot of solid info / strategies in it.
I've attached the files as a .zip file to this post. Good luck!
Effective LabVIEW Programming Files.zip
You *can* use DETT on built applications, just enable VI server access and debugging in the build. Here is a description of it:
http://digital.ni.com/public.nsf/allkb/A50A8BBFD737679186257D7700688757