tr,
When I start into the cave, I have the reel in my left hand. Primary light in left hand and the reel handle in the same position as the light handle with the opening towards me. I control the tension on the line with my thumb.
On a descent, I switch the reel to my right hand(palm facing up) and turn the opening towards me. I then put the light in my hand(not through the goodman handle). I control the tension with my pinky, ring and index finger using my pointer and thumb to hold the light head.
This leaves my left hand free to equilize, BC and Dry suit.
When going in, I try to keep my arm extended this keep the line away from me and my gear.
Then when I go back to level ground I just slide my left hand into the goodman handle(which is facing up as it is cradled in my right) and turn hand over and grab the reel. Again always with the opening facing towards me.
On exit, I keep the light in my left hand (turn palm in towards right when extended) I grab the reel and keep the opening facing up. I then start to reel in the line with my right hand.
This keeps my light from going up and down and up and down.
On ascents, I just stop, adjust bouyancy and then continue. It makes for a nice slow ascent.
I try to do as much as possible with the reel and light in the left hand. Leaving my right hand free for air sharing.
While I haven't used this to shoot bags yet...I would do it the same as On exit(read above). I use spools for my liftbags.
The best all around thing I can suggest is a good team member keeping tension and watching your placements and tie offs.
FYI I used the Dive Rite reels for about a year before the EE one. I used it the same way. The only difference was that you tend to use the same fingers to keep tension on the line on either hand.