Ok, I see what you are asking. When I tack, I cross behind the main sheet, never up on the seat. I also have seat cushions which are a big help because I think I usually put one knee up on the seat for the side that is being worked (those seats are hard on bare knees). Once the jib passes the mast, if the wind is strong I may need to cross behind the main sheet and bring the working sheet in. Otherwise, I just reach over to the new working sheet and tie it down. I always have the sheets laid out and ready when I prep for tacking, so there is no looking around for them in the heat of the moment. If the wind is light, I will simply sit in the companionway and work the jib sheets sitting down. Its not hard, but then again, its all I know. First sail boat.