Topband: Gullwing radials and multiband radials?

[ford]

Currently using a 45' aluminum tube vert with 3X15' wire capacity hat.  Have about 20 random on-ground radials.

Feed point is 3' off ground  and mount is a treated  5X5 post with PVC pipe sleeving over Al tube.

Thinking about going to  4 1/4 wave elevated radials.

1.  For 8' radial elevation is moving the feet point up to 8' a must or can i "gullwing" them up?

2.  Have found very little info on putting traps/coils in elevated radials to make them better for 160/80.

3.  Are folks commonly using pairs of radials cut for different points in the band  to achieve bandwidth broadening?  Have seen only one publication mentioning it.  I do not wish to use relays in the radials.

K5ACO