I could be a willing non-ejaculator. The longest I’ve gone without ejaculating is 82 days. I am currently going for 120. The last week of no ejaculations I reached a type of on going ecstacy whenever I jelqed. What bought me over the top one day was edging while clamping. Each time I begin a new exercise it takes time to adjust to the new sensations.
The first 40 days of not ejaculating seem to be the most difficult.
Personally I don’t think moderate masturbation affects gains. I have gained more than an inch in length in just under 5 months(counting a month as 4 weeks not as they appear on the calender). I’ve only ejaculated 4 or five times in this period.