My tube was about 6" long, of course it could be pushed in, but at it's maximum extension it was just long enough to allow me to use some paper tape to fasten it to my stomach under my shirt when not in use. I used a drip bag feeding system not a syringe, so the length of the tube on the feeding bag gave me all the flexibility I needed. Because I discovered that feeding quickly made me sick right away, I would slow drip in about 4 cans of Ensure and 3 more of water over 1.5 hours. I did this sitting up in a lounge chair since lying down during or for about 30-60 minutes after, caused problems also. I just tapped a nail into my wooden fireplace surround, hung my bag up, hooked up, and dozed or watched TV while eating.
I cleaned the opening in my chest/stomach on the outside in the shower each day with plain soap and water, and then when I got out I applied antibiotic ointment all around the opening as a daily routine. I never had any issues with my PEG related to its function or with infections. I cleaned it out occasionally with soda water and the syringe, always flushed it with several syringefuls of clear water after each use, particularly carefully if I had put crushed up tablets of meds in solution in the syringe. The residue could clog it easily. I threw away my bag each week and started with a new one, ditto my syringe. When it came time to remove the PEG I did it myself. I did not have a balloon type, but one that had a fine wire in the tube, which when pulled tight, caused the tube to "pig tail