Sponzo...Here's a picture of my tube setup. I usually have 4-5 rods with me all setup to go. I also have a fish finder and life jacket. The rods that I'm currently using (different than what the picture shows) are:
Shimano 2000 spinning reel with Bass Pro Bionic Blade 6'medium action
Shimono 1000 spinning reel with Fenwick graphite 4'9" ultra light
Abu Garcia C701LX spinning reel with Daiwa Graphite 5'9"
Quantum AC500Pt Bait Caster on a Cabela's Gold Label 6'4" reel
None of them are real expensive $90 - $120 US for the reels and about $80 - $100 for the rods. However if they were all to fall off my tube it adds up.