I guess there are pro's and con's to most things in life, because I found tall girls to be very sexy
I'm 5'7 and then girl i was 69'ing with was around 5'11. 4 inch difference was enough to stop us from an effective 69 mutual lick/sucking.

DAMN IT! maybe there's a term for this? gapped-69 perhaps?

69 where you are on top, and she has 1-2 pillows under her buttocks. This causes her pelvis to tilt towards you so you can reach her for some DATY. I think it should bridge the 4-inch gap.

Or, you could get into a real nice time of face-sitting as a substitute. Many ladies have commented they like do this but only if the guy asks since it is a dominant position and some guys aren't into that.

I do have some better ways of doing it with someone who is much shorter than me and actually give a more comfortable view for you. Try spooning but with pussy to face and cock to face view on your side. This positon offers a good look see with things really available for you to twiddle with.

Kisses Haley

One of the last civies I dated for any length of time was 6'3." And even with that much height difference, there was never a problem with 69. We used the tricks like Haley and the Prof mentioned -- a pillow under her butt or having her in the top position, etc.

Remember, all ladies are the same height when horizontal. LOL

I've never had a problem with different heights...  shorter or taller.  The angle of the dangle is adjustable.  I'm only 5'6, a Fav is 5'11 (according to her web site)...  she likes top side of 69.  
I also like 69 on the side, very comfortable.  Because one partner is not working so support themselves plus do sex, there is more focus on play.
skb

you do me then I do you kind of guy. Then you do me, then I do you, then you do me, then I do you. Mixing it up from every approachable angle also adds to the fun.

LMAO!!!

I went through the same thing! I'm kinda on the short side, about 5'5 and Ive dated a couple of gents who were over 6'0. During the 69 it was like we had to take turns pleasing. It was a little complicated, but we made things work

Being short as I am it makes it
easy to manipulate myself in a few interesting
positions

Im 6f 3i so I dont have a problem with this or maybe just the opposite. My problem is when shes on top and you have to steach you neck to get to her makes my neck sore as hell. Even my 9 inch tongue doesnt help...