While this isnt a big issue for traditional casting or spinning rods in a fly rod where rod action can have a dramatic bearing on the fishermans ability to put a good line out it can be crucial. You will very rarely find a truly telescopic fly rod because telescopic rod design has a rather negative effect on a rods casting action.
Review Of The 5 Best Telescopic Fishing Rods And Collapsible Poles
Hurricane Mako Saltwater Telescopic Fishing Rod Mudd Creek
Amazon Com Plusinno Fishing Rod And Reel Combos Carbon Fiber
3d Telescopic Fly Rod Turbosquid 1319664
Centrefire Telescopic Fly Rod Fly Rods Telescope