We use the Vango adventure tarp on the front of ours - works fine as long as not put up in gales and the guys are double pegged to guard against gusts.
We're on the fourth year of our Icarus and it's been a cracking little tent - shame they have stopped producing it.
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.