Re: What is wrong with my roll cast?
the last video posted (above this post) is essentially the switch cast. There is no stop in it. I have used this technique when fishing indicators for a long time, but never realized it had a name. The roll cast that most of us learned puts us under a lot of pressure to make a perfect forward cast because by stopping the cast we lose tension in the line. Don't stop, keep it moving. The other key is the low to high movement of the rod. Sweep it back low and then raise it to the firing position.
One last comment, only a couple of post mentioned the actual fly line. For the first 30 feet, the WF and the DT line are the same. But after that, the WF thin running line can't support the roll cast. If one believes longer roll casts are necessary, either a DT line or spey casting techniques are much easier to employ than all the other nuances that are needed to make a 45 foot roll cast with a 30 foot head.