I have found that with a bit of swapping round you can intersperse with sections from two different fish poles. But I guess most people realise this, and it's just me only just catching on
For example the top three sections of my Zensorflex fit perfectly onto the Avanti 16metre pole I bought off ebay. Making approx 50ft pole
They need to though it's a bit thin. The bottom three sections are great, thick and strong like a zensor. but the top three :
I'll stick with fish-poles though.
The zensor is fantastic, I bought three, and I'll still on my first one 6 months later, and yes you can make a bigger pole with a bit of swapping round