The news stories are saying it was a 5ft ladder (based on the Home Depot receipt). They are not saying anything about a folded ladder.
And something else I just thought about from the New York Post story:
After his stop at the gun shop, Crooks went to a Home Depot, where he purchased a five-foot ladder. A receipt for the ladder was later found in his pocket.
“We condemn the violence against former President Trump, and our thoughts are with him, the other victims of Saturday’s horrific events, and their families,” a spokesperson for the retailer said.
As of Tuesday, it was not immediately clear if Crooks used the newly purchased ammunition or the ladder in his attack on the Trump rally — though he did use a ladder to scale the roof of the factory to stake out the crowd.
So if they have the Home Depot receipt, how hard would it be for LEO to identify the ladder and match it with the receipt?