Here’s the link to the description of the antenna Brian refers to:
I made it originally in November 2011 and redesigned it in early 2012. It’s how I made a SOTA lightweight clone of a Buddistick from Bud’s own article. I’ve been using it on 20/17/15 since then. It seems to work. It’s not going to be as good as a 1/4GP. But as that article describes, it does 20/17/15 and fits on a 5m mast. That was a major requirement, fit a 5m mast. My 60/40/30 dipole is designed for a 5m mast as well. So the antennas tune up and work on such a mast. I altered the coil and can get 30m now. Shorter top sections allow 12/10m. You need at leat a 7m mast for a 20m 1/4GP. In fact, the reason we had a 12m challenge a few years back was primarily because a 12m 1/4GP fits perfectly on a 5m mast. The sunspots were peaking so 12/10 were open plenty of time but12m was chosen over 10m as it’s less commonly used and fitted my preferred mast size!