FIL is a bloody nightmare for DIY, but it's kind of the opposite of faffing.
He wanted to help out with our house and garden work before the baby arrives -fair dos, much appreciated.
But MIL took me to one side and said that by no means should I let him out of my sight, and to make sure she knew the plan too for an extra pair of eyes on him, because she knew my husband would be too agreeable to his suggestions.
Even with two of us supervising, he still managed to bounce out to the garden and start a particular job saying "it's ok, I've got a plan".
Well, his "plan" involved creating an immediate trip hazard.
Great, given I can't see my feet.
I needed one task doing urgently, and since everyone agrees that I shouldn't be allowed up a ladder, he was supposed to prioritise it. Nope, he has a vision for sorting out one of the other jobs. "Won't take long". Three hours later, that job is finished. He finally looks at what needs doing for the urgent job. It involves nipping over to speak to a neighbour.
They come back, "can't be done". Me - "Oh, didn't you check X with the neighbour". "No, we could see it couldn't be done".
They didn't even go in his fucking garden. After ten minutes of me trying to convince them that our garden even backs onto that one (even my saying"I have spoken to him before, he's lovely, the gardens join like this, I have literally been in his garden"), they go over and glance over the hedge, chat to him about the weather, and don't work out how to solve the problem. WHICH YOU CAN'T SEE UNLESS YOU'RE IN HIS GARDEN.
At least if they faffed that might include actually looking at the problem properly before the start.
He's now banned from further DIY and gardening because a journey up a ladder is probably safer tha explosive levels of blood pressure!
He finished the visit by cutting a random hole in the ivy, rather than tackling the specific parts round the window. My ivy has a bald patch.