I've taken a leaf from Barry's book with regards to bite indication for Zander. Anyone who's met Barry will know that he uses the old fairy washing up bottle tops as bite indicators for most of his fishing and having seen them at work, they do a dam fine job.
I tried all manner of indication last year including alarms with and without bobbins, bobbins on their own, quiver tips and just a slack line, I've yet to find something I'm comfortable with. Slack lines offer no resistance to a taking Zander so is probably the best until it gets dark and I've had loads of dropped takes when using alarms or just bobbins on their own.
Having seen Barry's bobbins at work I've just started to use the nearest alternative to a bottle top that I could find in my boxes of fishy bits and bobs.
I've used a couple of old Solar line clips, the black plastic type and some old bobbin bodies and that's it. The clips have been screwed up tight and once clipped onto the line they won't fall off, they can still be removed for casting although it is possible to cast with them attached. The bobbin bodies are a very light weight plastic so offer very little in the way of resistance.
The next stage is to make them visible at night with some isotopes.