If you’re looking for ideas , here’s another DIY solution …
I made this to hold a small “golfing” umbrella (also from my beloved Decathlon store, hi).
It’s made from a 30cm PVC tube, diameter 40 mm + a piece of aluminium angle stock, 29cm long, of which one end is made into a pointed tip ( Note : don’t take this in your backpack on a plane … it’s a weapon! ;-).
One long 4 mm bolt with a thumbscrew makes it easy to unfold and use. Two nuts inside the tube make sure that I don’t crush the tube. All tension is held by the bolt alone.
The handle of the umbrella is a tight fit, I did test it on a windy summit … and on a windy beach on Mallorca !
I suppose it can also hold a light fishing pole (not tested yet), either by taking a larger tube to fit the pole inside, or using all but one element of the typical 6m pole from Decathlon, this will fit inside the 40mm tube. You will only lose the bottom 58 cm, still enough pole to put up a full size GP for 20m.
Still to do : make two cutouts as marked in the next picture, so that I can fix it at a 90° angle. Not sure where to use that, maybe for putting it between two large rocks on a summit, when you can’t put it in the (rocky) ground ?
(Would be OK for an umbrella, but probably will not take the torsion force of a fishing pole).
Other application ideas welcome !
73, Luc ON7DQ