I'm looking for a specific casting crankbait s-glass, for medium lures and depth is to fish from float tube that does not exceed 150 dollars in price, I would like you to advise me, I'm new to the world of crankbaits, thanks and greetings

St. Croix Mojo Crankster. They make one in a 6'10" that would fit your needs perfectly. I have the 7'4" version and it handles nicely. Just a tad heavy, but that's the nature of glass rods. Handles big fish extremely well too.