I used to do similar kinda stuff when ryanair used to do their penny flights and there were no credit card charges with certain cards. I used to book like a hundred flights all over europe and it would cost me a £1. I would book the connections for the shortest layover and one for the next in case I missed a flight, I lost a few pennies during my time but not complaining lol.
One of my favourites was flew PIK-STN at 6.45am, got off plane and just rejoined the queue and got back on same flight back to PIK. I had paid a penny for the next flight back if I wasn't allowed on this one, but no probs, was back in PIK by 9.30 and on the golf course by 10.
I did get some funny looks from the cabun crew on the return flight though :0