Hi Steve
When using a wire antenna I use a 10m mini pole with a few sections removed from the top purchased from this place Fiberglas Teleskop Masten .
For some of my longer treks in the past I have used a small 5m pole fits inside the rucksack and the reduction in weight was noticeable. ( stood on the centre part and it snapped on a windy day)
Another option for lifting the antenna ends of the ground is bamboo canes only cost £3 for a pack, cut/trim them to what ever size you need. They become useful when you use one trekking pole to support the tarp and the other to support the mast.
Have a read over this topic Need advice for "rapid deployment antenna" - #20 by M0JLA
Good luck
Graeme