If the wind's more or less behind you, you can steer the float to a limited degree with practice, by flicking the line to one side or the other, letting a bow form, then closing the bail arm so the bow pulls the float to the side as the line tightens.
Where the basnks are open and you have a bit of elbow room, you can walk up and down the bank doing this and zig zag it out to search the water.
If you haven't got a lot of room or snags on either side, I wouldn't do it, as a fish can kite a long way to the side using braid and you'd be surprised how long it takes to get them under control and coming towards you.
If the float stops, it usully means you've weeded it or found a bar or something. You still have to wind down and check. Takes are usually fairly violent, as the fish comes up, takes the bait and hooks itself against the resistance of the float as it sinks back down with the bait.
You don't strike, just wind down quickly as soon as it's gone, when you feel the float keep winding unril you feel the fish kicking and pull in hard with the rod to set the hooks.
They often feel a lot bigger than they are, as you are also pulling the float along and the vanes cause a lot of resistance, coupled with the fish opening its mouth to try and throw the bait.
That's about it really. Strong line's a must and mono's next to useless because of the stretch and the fact heavy mono - say 20lbs - won't float for long even if you grease it. As soon as it sinks, you've obviously in danger of snagging, in practice the float won't go very far once the line's off the surface.