What hitch lock to use when using an AKS stabilise

Hello there

I am new to caravanning and i need some advice please? I have just bought a brand new 2012 Coachman Amara 640/6 and it is fitted with an AKS stabiliser. I had in the deal, a Fullstop hitch lock but it can't be used when towing. 

Is there anything you can use to lock your unit onto the tow hitch? We are travelling to France soon and i am really not happy about going all that way with out the unit being locked onto the tow hook.

Thanks in advance

Greg