That was a little difficult to read.
Do you mean like this?
http://www.herpcenter.com/reptile-ar...arallel1lg.gif
If so, you can wire up flexwatt like that, but I personally prefer not to do so. If I were ever to stop using a certain shelf, that piece of flexwatt would still be running because it's connected to the rest of the other flexwatt. I would rather turn off unused flexwatt. And it's just easier for me to disconnect one piece of flexwatt w/ it's own individual cord.
It's all just a matter of preference.