The Phentex Humpy is my version of a dry Boatman. I have more representative boatman patterns but the Humpy does better during the hatch.
I've taken to using my two 3wt rods more when the expectation is fish at a max of 16". It is much more fun and you can get them in fast enough for safe release. I will use a floating line with a sink tip attached. If I need to get deeper I will add another sink tip.
The sink tip is an interesting rig. It will go to its stable point quickly and stay there. With a stillwater line, it will continue to sink. So if you want to maintain a certain depth and be relatively still, this is a good choice. Eventually, if you are completely still it will continue to drop but if you are not anchored, it is not likely to happen.