I'll jump back in here. I agree with you that you truly don't need a disk drag. However, there are many other advances in technology that offer some benefit, which are also not needed. Breathable waders, high-modulas graphite rods, pontoon-boats, etc... but they are nice to have if, and only if, you can afford them. I like my disk drag reels because they work great, don't ever freeze up, never overspool, and can assist in tiring a steelhead or salmon more quickly. I even use my Ross Cimarron 4(the cheap line of disks by Ross) on my down rigger set up. Just convienience and confidence in the gear, I suppose. Having said all that, I have 7 Medalist reels from light trout to steelhead/salmon, and learned how to fish with them. It probably is better to start with a palming reel, just for the education of how to do it. My random thoughts anyway. Just like I would suggest a cheap pair of breathable waders over neoprene or hip boots.
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Flyfishing, the gentler art of ripping lips.