Good luck. There are a handful of studies totaling at most a couple hundred men using traction methods to get an increase of 0.25 to 0.75 inches, and flaccid more than erect. No girth increase. Several showed absurd results (Russian study, 2.5 inches or something crazy like that).
The few seemingly legit studies said that at least 4-6 months of 6 hours per day, daily, in traction was required.
I am a very determined person. I tried twice, no gains, except flaccid of maybe 0.25 inches for a week. Back to normal after that.
I know somebody from a penis extension forum. He is well-off and spent a lot of money, a lot of money (over $100K) flying all over, talking to researchers, trying different methods, and the last time I spoke with him, nothing within measurement error.
Look at it this way. If something requiring 4-6 months of 6 hours per day, daily, in traction to get 0.75 inches, you would not be answering this question.
But you got nothing to lose but time and a few hundred Dollars, Euros, GPB...