Hey, I have the same dilema - have to keep my car outside . Few words of advice - I got a size 3 cover and it was too small (maybe just cuz of body kit), but no place had a size 4 in the ood ones. Another option is this carport thing I am gonna get. It is $160 and it uses metal piping w/ fittings and tarps to make a sort of "garage" for your car. watch out for the cover blowing away, hold it down with something.
Bras are fine for trips, but if used for daily use, you will damage the paint from the wind moving it a little all the time the car is moving. If you are set on using one all the time, clean the front of the car good, and then put 3 coats of wax on it. It will give the hood some protection. Pull the bra off once a month, and wash and rewax.
-----1993 Bird 5.0------
393 stroker, Vortech YSi, on E85
Lentech Strip Terminator & 4,000+ RPM stall converter
Detroit Locker with 3.55 gears.
17x9 Cobra Rs with 255/45/17 BFG KWDS
275/50/17 M&H DR on the rear