Unicorn tow cover

I'm considering using a tow cover on my 2012 Bailey Unicorn 1 which has been built with no awning rail on the offside.Does anyone use a towcover which utilises suction pads.I spoke to Specialised covers last year who said they were reviewing their suction attachments which so far I have only looked at on line.I would like to use a cover as arriving on site last year I noticed a small dent in the front locker box door and as this van is predominately aluminium front unlike the 2 where they have protected a large area with GRP I'm concerned about future damage.I've read various reports about suction pads and wouldn't wish to run a greater risk of damage should they come off a situation I have read reports about.