Which imaxs have you got?
One of the most important bits of kit you can own is your trusty tripod. For many years Ian golds tripods were the only ones ...
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Ive a few the 7ft golds super match is a good safe bet but don't like top bar heads stays with two piece beach rods.
Daiwa telescopic compacts to 5ft comes with a bag with pockets for heads extends to around 9ft! pretty good feels heavy;ish when in bag but out feels light stable also you can use short as extending bits come off to leave a shorter unit. that stays with Three piece rods as all same height on quiver plus rods are 14ft odd. Think Icon or Imax had same version?
Other which is tough as F is one by Odds n sods smart design so stable they use a piece of angle that has been cut so bars lock into main leg
Top bar cups are an alloy tube that that's had a part cut out for rods to fit in and neoprene lined. Hard to find them.
Have another 7ft'er from LC rod rests from Canvey Essex sometimes had them on ebay but supplies kent and essex shops