You can stand on the bottom with your raft or toon behind you and fish. You can't sit on anchor and fish. Rainbow trout and steelhead may be the same fish genetically, but they aren't in the regulations. A steelhead is clearly defined as a rainbow trout in excess of 20 inches in length.

That officer was pretty poorly informed and his ass is going to get chewed on by his supervisor or a judge for having such a piss poor understanding of the rules he's supposed to enforce. If there was any justice in the world, he'd get fired for being so ignorant of his own organization's rules.