well I could use the Frontline but these panels glue ups are 1.6m high. we only have 1.2m version here in NZ. to glue 1.6m I will have to use the Frontline Extenders.. takes time. so I just used my old and trusty Record clamps. I have several of these Record clamps at roughly 2m long, one of them I bought from an elderly lady in her 90's, I was wondering why she has a massive clamp thats almost twice her height and she said she inherited these from her father!