I don't understand the "sloping top loading wires, that sloped towards
some tie point". You have a picture of something like this?.......

Just visualize a upside down ground plane, with the radials on top,
instead of the bottom. That's about what it would look like. They could
slope a bit, and I don't think it would hurt too much. I think it will
be more
effective as a hat, if you can connect the ends of the wires to make a
outer
loop. But you don't have to do that. If you had it in the attic, and
the roof/
rafters were all wood, with no metal, you could have the tip of the
antenna
near the roof/rafters, and just run the hat wires along the rafters.
But ya still have to worry about those ground radials.......
It might be easier to make some kind of attic dipole, or loaded dipole,

using two elements back to back. That type antenna requires no
radials.
I have two attic antennas myself...One is a 2 m ground plane, hung from
the rafters, and the other is a 40m dipole, that is fed with 300 ohm
line
to my tuner. It will work 40-10 ok...It's kinda of a backup I can use
if the lightning is so bad in the area, that I don't want my regular
outside
antennas connected. I even unhook it, if it gets real close.
MK