[TowerTalk] Any 75/40M solutions?

[Transpacific]

Fellow antenna users: I just ordered a Hex Beam for 20-10. I do need to find a very good solution for 75/40M .I'm replacing a 75-10 vertical and I want a  short (not full length) wire solution. Or, if any one knows of a 75/40 vertical, that too is an option. I'm on a city lot and my roof is very visible.
Any suggestions?

Tom KE7BYC
transpacific at comcast.net