The up to 9m poles are glass fibre and will wobble a bit they are also only 1 metre sections. The carbon fibre 7 metre is also only 1metre sections. The top sections of the carbon are weak and can be crushed but if you marry up the c/f with the top 3 & 4 sections of say a 4m glass fibre you get the stronger tops. The poles are interchangeable. Prob is you cannot go higher unless you use fishing poles which start with base sections of 1.5 metre.
The telescopic ones shouldnt collapse with weight on the top and would be ideal for limited height. You can wrap pvc tape round the top of each section to stop them telescoping completely inside each other which makes them faster to extend than the modular poles.
I am up to 18m now with modular fishing poles cost is about £220 s/h but the lightness blows anything else out of the water. This type has to have the hose externally.
You MUST use a light brush (max about 12oz complete) hope this helps.
