HW-40HP, Multi-band Off Centre Fed Antenna 40 - 6m
The M0CVO Antennas HW-40HP
The M0CVO HW-40HP is just 20.28m in length and will operate on 40, 20 and 10m without an ATU and 80, 60, 15, 6 and WARC Bands with an ATU
The leg lengths (BALUN to end) are 6.76 and 13.52m respectively.
VSWR is better than 1.5:1 on resonant bands (40, 20 and 10m).
Or why not upgrade to a QRO (1kW) version