There are a lot of different ways to fish Crane. It all depends on what you want out of it. Sometimes I like to fish drys over there and that is when I take my 7' 2 wt. Other times when I am polish nymphing the heavy flies, a 9' 4 or 5 wt work better for me. I would not fish an indicator over there, but that is just me. A lot of the holes at Crane, you basically have to sling-shot your fly into the hole or even just dip it in like fishing with a cane pole. It is just the only way to get into some of those really tight spots in the middle of all wood and logs. Most people pass these spots because they figure they could never get a fly down into them or even out of them, with a fish, impossable. That is where they are wrong. You have got to try them. Heavy, heavy flies are the only way to have some control and to get them down fast enough without washing away into all the wood with the current. Heavier line is needed also to bring the fish out faster with less of a chance of loosing the fish and your flies. Even with this, you are going to loose them often, but the payoff is BIG! No guts, no glory, simple as that.
There are alot of deeper pools with fast current flowing into them at Crane. These are great spots for polish nymphing with the heavy flies. Basically, you flick the fly upstream and high stick it back down stream past you keeping your line in contact with your fly leading it down stream at the same rate of the current. You are fishing by feel, and you will feel the bite if you are doing it properly. Hook set is always down stream. Again, heavy flies are needed for this. Some of my flies have 38 wraps of .15 dia. lead along with a 1/8 inch bead. Now these are tied on a size 10 TMC 3769, so it is not that big of a fly, just super heavy. I catch the 5 and 6 inchers on it all the time. Also I have ran these flies in tandem and even up to three of them to get the rig heavy enough to get down to where I wanted to be. If you are not hanging up on the bottom every now and then, your not fishing deep enough.
Hope I've inspired some ideas.