I think the divert talk is just a misnomer, let's face it, if you're taking plog fuel the chances are the weather is fine. How many captains here would divert if you reached your alternate fuel rather than commit to the destination intended? Probably not that many. I've taken plog fuel for the last 18 months on the ejet (in good weather) and have never even come close to eating into my alternate fuel and that includes flying into most of the major airports in Europe, flying lower and includes 2 or more times round the hold. There's no need for extra if you know the first fuel check is going to throw up an extra 4-500kg, it's all about trust in what's presented and that's where experience play's it's part. Horses for courses but if that makes me a "bad captain" in Vokes55's eyes then cest la vie.