OK Scott, et all--
I am currently using in my '85 Westy a power system utilizing an auxiliary
battery behind the driver's seat & an 8-watt solar panel
called an MSX Lite by Solarex.  It is very thin, reasonably
flexible, & "bulletproof"--meaning it is not fragile, as some less
expensive models can be,  i.e. can survive falling coconuts, etc.   It came
with a good, long cord, which means I can park in the shade & set up the
solar panel in the direct sun.
    I bought mine last Dec from Real Goods Trading Corp.
Their main headquarters is here in N. Cal &  they have an 800#.  I am sure
they do an online business.  You can also ask for catalogs for products by
category.  Normally, you can call & get expert tech advice re all
alternative energy systems, including solar panels.  I also bought from them
a large fast battery charger for multiple nicad rechargable AA, C, DD, &
other smaller types.  I can plug the unit into my van's aux battery or use
it plugged into the solar panel.   RadioShack sells a good one.
If you get one, be sure it's the fast charging variety, it's worth the extra
$.  I have found Radio Shack rechargable batteries for book lites &
flashlites, etc to be good & reliable.
     I use the solar panel for a variety of things:  when parked for days on
end at remote beach spots,  I can trickle charge my main battery just by
propping the panel up in the sun & inserting it's plug into my cigarette
lighter.  I also can use it's power when in the sun, to power my small
battery charger without using my van batteries.  It will also power small
radios &, I suppose, blasters.  You get the idea.  I paid about $100 or so
for it & love it!
    I don't know much about solar, just went ahead & got this panel to give
myself the extra measure of security & ndependence while traveling in Mexico
last winter.
Hopes this helps,
Phaedra
'85 Westy-Wolf
"Hester"