The only item I have a problem with is the angle of release and the toss required as the power builds up.

High tension launches will tend to rotate the model if you release it at level or only slightly nose up attitudes. The model accelerates very fast and then tends to over rotate and force a possible pop off. For high tension launches I've always found that you're better off to have the model leave at a 45 to 60 degree nose up angle. I've seem many a pop off from this sort of over rotation under high tension.

BUT....

When launching at that sort of angle the model MUST have a very strong push so that it's truly flying before it leaves your hand. Too soft a launch will leave the model with little airspeed and a very high virtual wing loading from the line tension. This will often lead to a sudden stall and instant crash. So I think it's important that the modeler learn to use a sytle very similar to an Olympic javelin launch right from day one as the tension comes up to full. The fact that many of the much lighter and poly-hedral can sort of get away with sloppy launches is more due to good luck than to good planning. But add in a bit of cross wind or a slightly more sloppy style and you've got instant matchsticks in a bag.

Certainly it's very good training for later models that will be far less tolerant of sloppy launching practices.

Otherwise it's a very nice primer for beginners. The method of sneaking up towards the full pull is a fine one but I'd like to see more emphasis on proper technique as the power/tension comes up to the higher levels.