Now that its getting colder out, we are starting to use the dryer more again. I tried to talk the wife into doing an indoor clothes line but she wasn't too keen on it.
So, I thought about things for a bit, then I wondered if I'd ever be able to quantify any gains by doing anything we've talked about. Thats when I did a little searching on ebay and found this:
Compact Propane or Natural Gas Meter SUBMETER 10063P1 - eBay (item 260497674459 end time Oct-28-09 14:05:36 PDT)
Its basically a kill-a-watt for gas usage. This should allow me to monitor usage for the dryer and the effects of any modifications.
I really like gascorts idea of taking my idea further with the intake ducting. So, I think I'll be looking into that.