I have had a number of flats on tubeles tired bikes and have plugged them and also used the injected slime on one occasion.
The plug type by TIP-TOP as supplied as a tool kit item on BMW works really well. I have installed them and then ridden the bike thousands of km until the tire was worn out with no ill effects, all the while keeping in mind to maintain safe speeds .The cord- type plugs that I regularly use to fix car tire flats can be used if extra care is taken . On one such cord repair on my BMW I did not properly twist it in enough and then did not trim it enough leaving a bit of a tail hanging.As a result the plug pulled out (rear wheel). At the roadside I put in one of the TIP TOP plugs and it held no problem until tire change 7000km later with the plug wearing down smoothly with the tire rubber.
The one occasion I used the slime on a bike was after another cord repair when that plug still had a slow airleak. I forget which brand , but it was from K-Mart, came in a plastic squeeze bottle with a monkey on the label.On cars I have used the aerosol can type inflater sealant, which also worked fine. Any sealant will only work if the puncture is on the road contact surface perimiter where centrifugal force can distribute it . Any hole up the sidewall , unlikely,needs to be patched or plugged

__________________
http://advrider.com/index.php?thread....207964/page-5 then scroll down to post #93