Hi Karel, 

Enjoyed reading your article about the Squirm. The San Ron Worm pattern works even better then the Squirm and its more durable. See the Video - Shows you how to make a San Ron Worm. Using glue. I'll be glad to send you some to try.

Just let me know,  
Ron Gaddy

How to make the SRW: https://www.youtube.com/watch?v=8SPYlRrBjh0

San Ron Worm Slide show: https://www.youtube.com/watch?v=wk6zRSqGh6c

My website: http://www.jonathancreekschoolofflyfishing.com/San_Ron_Worm.htm