You can't prosecute on the basis of weather unless you are talking RVR or known icing - but icing would have to be the cause of your problems. The ONLY person who can determine in flight visibility and weather is the PIC.
Regarding airfield logs, there are plenty of unmanned fields which have no records, and in many places you are not obliged to file flight plans or speak to ATC, so another tricky one.
BUT it is a very silly thing to do, illegally double logging, if that was the suggestion of the original poster, especially if you are using this time towards a CPL or similar. IF you get found out at some future date, you'd probably have your licence pulled, lose your job and suffer a big fine, not to mention the possibility of prison. A US pilot recently was put in prison for failing to declare a medical condition on his medical application. While flying commercially this condition raised its ugly head and he nearly ended up killing himself and his passenger, and so the FAA certainly took a dim view.
In Ernest K Ganns book, Fate is the Hunter, he recalls a flight from Hawaii where he lets the copilot take control. He is shocked at the standard of flying and later on it transpires that the copilot never had a licence, but had gone for years bull****ting everyone - and got away with it.