Ok i am fairly well versed on australian car seat laws... however the dilema i have is that we have just bought a new car that has isofix points. I am aware that to use an iso fix seat atm is illegal and i have no idea how far down the line of gtesteing the people in the know are or are not... however seeing it is legal to use a booster seat with no tether starp even surely i could use an isofix booster seat for my next investment? to class as a boster set in guessing it could have no form of harnes so i'd have to use an H harness on the seat belt? The reason for wanting one is to not have the seat belt utilised all the time on both sides of the car and also not wanting Ds next to his new bub sister as he is a typical nearly 3 year old who is large for his age (19kg) and may cause dramas if he is toio close to his new sister!as well as the difficulty of getting to the middle car seat! any sugestions?