This will give you a bit of clean trailer tape. You'll probably find that when you stop the machine or punch out a track, there will be a click on the tape. If the song fades, let the faded note or riff go much longer than what you intend to use and make sure none of those annoying clicks are included. The second tip concerns the mix. This is another reason why, when you buy your 4-track, you'll want one compatible with a normal stereo deck.
Most people do their track-bouncing internally.
That is, they leave a track open on the tape for mixing purposes, fill up the rest, and then mix it onto the free track. However, there is another method of recording six tracks on a 4- track machine. Record the first four tracks, filling up the 4-track tape. Then place the new tape on the 4-track and record the last two tracks on the presently blank tracks 3 and 4. Notice that on this tape all six tracks may be placed anywhere on the soundstage independently from each other.