Lots of good advice. More big rainbows are caught on purpose than by accident. Sight fishing as fw suggested. More are caught on small rather than large as gavin says. There are fewer in numbers just about everywhere you fish as greasyb states. Unlike browns, rainbows like most offerings presented at their level in the water column. Learn to look into the water rather than just at it. And as Phil stated, a good jig fisherman is hard to top. Wade fishing is the most effective when it comes to sight fishing. If I were limited to a boat, on the white river, I would throw jigs. Rainbows generally are not chasers like browns. Change up a few of your tactics and we will be looking forward to your report back. But I must admit, that if I were catching big browns consistantly like you guys, I would be hard pressed to go look for a rainbow.