actually the enterprise was connected to space dock. if you check out the photo of spackdock on the startrekmovie.com and go to dossiers, search for federation and on the far side you see the enterprise clearly docked. also you see the enterprise docked when the shuttle carring kirk and mccoy go over the ship. to me i would love to see drydock like TMP.
All i ask is a tall ship, stars to sail her by.