Suggestion
Braker and Hobby,
As an experiment, why don’t you try wrapping around the “donut” area (i.e. for me at and above my circumcision scar line) before pumping. Sometimes when I want to experiment with some serious pumping, I will take some tissue and fold it over several times and then wrap the tissue around the area at and above my circumcision line and below the glans. Then I’ll take some electrical tape and wrap around the tissue. The tissue is just a cushion between my dick and the tape.
You can use your own alternatives. What this wrap does is to keep this potential “donut” area from expanding as the rest of the shaft and head does. When I’m done pumping and undo the wrap, I don’t get the “donut” and the lower half of my shaft seems to hold its pump thickness much better. So try just pumping only for awhile with this wrapping technique (or your own) and see if this helps to prevent the “donut” effect.
Peforeal