Tony:
A 3-sided box that matches the dimensions of the tank cap will be held on with a molding of sorts. The front piece, rather than block access to the open tank, will be attached to the front panel of the DIY hood.
The hood is hinged near the middle - sort of like Jamie Cross' at
http://members.shaw.ca/jcross1/system.htm
except his is much neater, and hinged near the front.
Clear as mud? Jon helped me think it through on the phone tonight. BTW, you've got mail. I needed the footprint on your skimmer. 6.5" sound right?
AJ [img]smile.gif[/img]