i was doing this when i first purchased my mystere. i was not aware i needed to have speed, and was going as slow as i could because i was getting overpowered with my new bigger sailplan and a few times the travler slammed onto the other side during a gybe (risking ripping a beam bolt head off).. so i started to travel in .... 2 gybs later i found myself flying through my window on my mainsail...

i no longer sheet in my travler and have learned how to manually travel my main across (hands on sheets).

just takes practice and a few extra set of skivvies