To all you 29er's out there!

look up ghetto tubeless on mtbr

you use half an inner tube (including the valve) to line the rim (often a 26 inch inner tube so it pulls tight to the rim) make sure the valve core can be removed

then mount your tyre, and a touch of soapy water to aid bead seating, and try to inflate it, if the bead will lock you let out the air, remove the valve core, squirt in sealant and re inflate.

then shake the wheel around. so the sealant can fill any tiny air holes.

my explanation is a decent summation, so would suggest you read up a bit

Not so much FTFY. But a touch better.

Definitly use 26" inners. split them along the center of the out edge. Fit them, and then trim to the rim edges.

If you live near decent hardware stores. You can blend your own sealant too. If you have small children. You probably have glitter, coloured sand etc. lying around. Chuck that in the mix for larger thorn hole sealing.

BTW thorn punctures are what tubeless does best. I get the occasional pine needle that disobeys physics and manages to peirce a tyre. Tend not to find them embedded, untill washing my bike.