Buggy Board on Bugaboo Frog and Phil & Ted Sport

[redspiral]

Hi there,
Hoping for some advice.
I have 2 second hand pushchairs (a Bugaboo Frog and a Phil & Ted Sport) which I pretty much use equally (in rotation) with my 22 month daughter and 6 month old son.
I am looking for a buggy board which will work with both, and I have my eye on a Lascal Maxi Buggy Board (the red one with faces). I can't find any information anywhere about their compatability with these particular pushchairs.
Can any one help?
Thanks in anticipation
Coral