Re: In-air mends
A reach cast is a very good start. When you make your reach you can get more slack by reaching as far as you can and step with the foot on that side toward the reach. Just move the one foot and you will be surprised how much more reach you can get. After the line is on the water you can wiggle out some slack. Now raise the rod tip until the slack is in the air. Drop the rod tip and make a little flip at the same time and the slack line will be tossed up river.
One problem you may be having is you are trying to mend too much line. The trick is to mend just enough line to give more drift with out throwing the whole line on the water up stream.