I like both, but sight often leads to eye strain. Having spent some time now using bobbers and nymphs for river fishing and with chironomids in lakes, I'm almost as comfortable watching the bobber as I am with watching dry flies, the main difference seems to be that I have to react faster to "bobber down" than to the "God save the Queen" response to a dry fly being taken. Regarding the eye strain, boat fishing on a river offers relief as you can switch out time on the oars while your partner fishes. In my pram on a lake, there is no relief. So I open a beer and miss over half the take downs that are happening. I really should go fishing with Ira and try to learn how to drink beer and catch trout at the same time.