If I didn't already have a Chargemaster I'd consider one of these units:
It's an automatic trickler that uses your existing balance beam scale ......

Here's a rather long winded review ....
[youtube]2GTwj_2qu_s[/youtube]
This guy seems to have combined the Targetmaster trickler and the webcam trick !
http://snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=2799115


It's an automatic trickler that uses your existing balance beam scale ......
Here's a rather long winded review ....
[youtube]2GTwj_2qu_s[/youtube]
This guy seems to have combined the Targetmaster trickler and the webcam trick !
http://snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=2799115