Possible Clues:

• Can you get to this part of the river?
• At last, every bit of a river
• Come to - stretch of river
• 'Stick 'em up!'
• Come up to - stretch between bends
• Sail with the wind abeam, using compass
• Stretch out and there'll be enough for everyone at last
• Hands up! It's an advantage for a boxer
• Arrive at - stretch of river
• Stretch of open water where a chap has submerged