The Thill floats have a similar system but, for some unknown reason, Lindy never mentions it. (I don't think anybody at Lindy understands the Thill floats very well.)
You just need to use a float adaptor like this:
http://www.anglingdirect.co.uk/media...t-adapters.jpg
If you use these, you can switch floats in seconds and never have to retie your rig. Lindy used to sell these, but I can't find them on their website anymore. You can get them online. Here's a video of how they works:
https://www.youtube.com/watch?v=_pJ6-p4A5QQ