Getting down to brass tacks (or tungston beads, but I digress) on a looong indicator leader.
False casts are your enemy. In your floating craft, once depth and indicator are set up, strip out fly line and pull out from rod tip, leave it in lake, and keep your flies in hand, or for pointy safety, in a fly card, cork or whatever. Just don't let them sink.
Now you can do snake, figure eight, or eventually single spey so the aerial circus gets aloft and shoot it out releasing flies at just the right time. Then depending on skill level, and since everthing is lined up and on surface, either roll cast or load up a cast, let it straighren out behind, and when you feel the load, let it all extend with shoulder roll (double haul as skill allows). I like to raise tip sharply a bit to put a small loop in line that snaps the turnover.
When picking up, bring in sharply leaving fly line head beyond tip, and get leader out of water. Don't strip in too far. One roll cast, then pick up, wait, wait and upon pressure to rod in hand, wash, rinse, repeat.
But, fish don't care.....
Ron