I thought this product was just another gimmick. I saw several folks on Youtube using these and thought they are being sponsored for using these. Well after burying the barb from a Jerk bait into my thumb trying to get a rod out of my kayak rod holder, I took another look. Sure glad that I did. They might seem a bit spendy for what you get but saving time untangling lines with other rods and protecting you from inadvertent hooks this is well worth it. I just bought 6 of these and already see the usefulness. The medium size fits most baits you will use and the Large handles A-rigs and large Glide/Topwater baits.
They don't cause problem in my kayak rod holders and I would definitely recommend these products. There are cheaper options that use velcro but my experience with anything velcro on the boat is it ends up sticking to everything you don't want it to stick to. Feel free to ask me any questions about these.