One more antenna question: Antenna pitch?

That is, my attic has a pitched roof and the antenna for channels 7 to
60 that I'm thinking of now is almost 13 feet long.

It would fit more easily in the attic if I pointed it down a little
bit just like the roof pitches down from the center. Does the angle
of the axis matter that much if the individual elements are all
horizontal?

After all, if the tranmitter is higher than the antenna, it's as if
even a horizontal antenna is pointed down, from the pov of the
transmitter.

I've been reading but nothing has addressed this. All outdoor
antennas are of course horizontal, and I don't get to see people's
indoor antennas.




BTW, as to loss of signal in an attic,
http://www.dennysantennaservice.com/...tallation.html
says: "A plywood roof covered by a single layer of asphalt shingles is
best.", (that is, other roofs are worse) and that's just what I have.
I'm sure it would still work better on the roof, but if I lose one or
two stations, I can accept that.