Crossing rivers safely

Hey there
I've just finished an 8 day walk in New Zealand with two friends. Towards the end of the walk we were faced with a river crossing that created some internal group debate (in fact we sat on the bank for 20 minutes in discussion). The river was flowing fast and cold - all up about an 8 metre wide crossing. The stones weren't slippery but uneven ankle twisters - the height of the water at your thigh. We chose a section that was wide and straight to cross at.
The debate centred on the following:
-should we unbuckle pack waist belts, link arms and go across together in a line OR
-unbuckle pack waist belts and go solo with the aid of our walking poles.
Which style is more stable and safer? We ended up all going solo (and getting across) but it was tricky to keep your balance with the water current (particularly for our 60kg member). Has anyone used the linking arms approach?
I've just finished an 8 day walk in New Zealand with two friends. Towards the end of the walk we were faced with a river crossing that created some internal group debate (in fact we sat on the bank for 20 minutes in discussion). The river was flowing fast and cold - all up about an 8 metre wide crossing. The stones weren't slippery but uneven ankle twisters - the height of the water at your thigh. We chose a section that was wide and straight to cross at.
The debate centred on the following:
-should we unbuckle pack waist belts, link arms and go across together in a line OR
-unbuckle pack waist belts and go solo with the aid of our walking poles.
Which style is more stable and safer? We ended up all going solo (and getting across) but it was tricky to keep your balance with the water current (particularly for our 60kg member). Has anyone used the linking arms approach?