You have many options;
1: use Slime in the tubes and hope that the puncture is fixed by the liquid which actually works quite well.
2. Take a spare tube for definate on a trip! I had a puncture and ook the wheel, tyre and tube out to find it has broken in 2 so no repair kit would fix that.
3. Remove the rear wheel - remove valve centre - break bead - press the tyre into the rim centre each side - attach rim protectors - put lever in between rim and tyre and lever - hold lever in place and insert 2nd lever and gently work around until tyre is outside the rim - pull out tube - run hand inside checking for what caused the puncture - insert new tube - lever tyre back on and inflate.
Tools: 2 rim protectors - 2 levers (flat type with no raised edges) - 1 valve core remover - tyre inflator (�4:99 from garages)
If your repairing the tube do it another day and simply find the hole - sandpaper it a little and apply glue - once it feels dry apply path and chalk after.
I break the bead by using a small G Clamp.
http://images.google.co.uk/imgres?im...a%3DN%26um%3D1