With a light trout reel, you're not looking for a drag that will stop a truck. You only need to set the drag strong enough to prevent backlash.
What's important is that the reel "starts up" smoothly without any jerking to protect the tippet.
I use "primitive" drags on all my fresh water reels. Spring/pawl and the Medalist type brakes.
If you've got them set right... it's all you need.
This is the reel that I've been using this week