HI Morne,
I agree with ShaunF. If push comes to shove using your floating/intermediate lines, and you fish unweighted patterns wanting to go deeper, or get your fly down quicker, you can.
Carry a packet of different sizes brass beads. When attaching your fly using a loop knot, thread brass bead before you finish the loop(If bead is above your hook eye it will flip your fly over making it weedless.Below the eye, fly will stay barb down.
Enjoy your trip.