If you are sending it to the wallet which houses your delegate, wait till you just produced a block(so you have less chance.of missing the next).
Then turn off block production
rescan blockchain
turn block production back on.
I have had to do the after.every send or receive so far. Turning blocks off, rescan blockchain and turn back on takes less than 10 seconds. So you shouldn't miss a block.
This is if you are sending to a delegate wallet I think.