Is this good idea?

[Troll]

I tried wrist curl drill from Georges book. But tweaked it to suit me and my needs. I do it without my dart in my spare time when I have chance.
And I have noticed these changes
1.I went back to my long drawback,but thanks to this training it has been cut ,because I feel I have power in my first now
2. My stroke is more fluent
3.More of my darts are landing in board straight.

[Leaky]

Awesome, sounds like you have modified it to suit your needs and what is feeling comfortable to you. Which in my opinion is the best thing to do. Now it is up to you to get that muscle memory consistency. Good luck and keep with it!