It should NOT take that many flips to draw fuel from a tank, through two feet of tubing, to the carb. My 3W 100 with Tillotson carb takes about 5 flips. I suspect there is another problem:

1) when the choke is closed, it should be totally closed. If it is cracked open, the fuel draw will be poor.
2) if the diaphragms in the carburetor are stiff or leaking, the pumping action will be much reduced. this is a fairly easy DIY repair.
3) If the screen in the carburetor is clogged, this will reduce in low fuel flow. Also an easy DIY repair