The drive way trick
When viewing a caravan, the seller will say that it is their granddad / mums / brothers etc. etc.
When showing you the caravan, they may try to get a quick sale and they offer you a fantastic price to buy now and take it away. They never ask you in the house, saying they don’t have the keys etc. or their family member is away on holiday. They will want to do the deal in the caravan or street.
So ask yourself, why don’t they want you in the house? Simple, they have just met you at the real owners house and are offering you the caravan while the genuine owners are at work, or on holiday!
And guess who gets in trouble for it? That's correct, you do. Always insist on them going in the house to check that they live there.