Pinhole in pool hose

[Judith]

Will the pin hole in the hose from the tank become larger. I would like to wait until end of season to replace the hose.

[PoolDoc]

No way to tell, from here.

I'd recommend getting the stuff to repair it, but putting off the repair till this fall . . . unless the leak suddenly gets worse.

If the hose is smooth PVC flex, you may be able to apply a 'permanent' temporary fix, using a Fernco coupling, like this:
Fernco P1056-125 1-1/4-Inch Stock Coupling

You'll have to make a lengthwise cut, so you can open the coupling and put on the pipe. Unscrew the hose clamps, put THEM on the pipe, screw them back together, slip them over the split coupling and snug them up till they are no longer super loose. THEN, slid the coupling so that the clamp area at one end is over the pinhole, and the split is rotated away from the pinhole. Snug the clamps down, keep the clamp at one end directly over the pinhole.