easy to do I lay in the sling put the 2 x 4 between my legs strap on the dildo push the sling and me away and it swings back fucking your daddy hole you just lay there and swing and get fucked make sure the 2x4 is mounted strong so you can push away with your feet and the you come back easy or hard on the dildo.. fucking hot and never get tired of that at some more lube and really kick back and fuck you ass.