The hook goes through the clew eyelet - the hook is manufactured already attached to the block. Then the outhaul line starts tied off to the eyelet at the end of the boom, then comes towards the hook/block combination on the clew, through that, back through the eyelet on the end of the boom, then off foward to meet the other part of the outhaul line. The clew tie down line I just tie through the clew eyelet and around the boom. Use a bit of Marlow D12, or excel racing pro which is also dyneema. I tie it three times around the boom and it slides well. Hook is about GBP£9 and string less than GBP£1. I hope this helps - sorry I don't have any pictures to explain further.