limit length in a pump for more girth?

I am thinking of buying a pump and was wondering:

If I limit the length by putting a “stopper” or plastic piece at the end of the tube limiting the length expansion, do you think it would be beneficial for additional girth expansion?

I guess I am asking if anyone has tried this before.

Also I was wondering if anyone put on one of Monkeybar’s restriction sleeves in a pump. I did see a lot about condom/wrapping pumping but not using a restriction sleeve to minimize fluid buildup.

Comments from Vets are appreciated.

I would guess that a restricition sleeve would tend to cause fluid buildup just as a tight pump will. But as I say it’s just a guess. Or it might caue bruising.