Suction bailers have to be heavy to dig, and they get even heavier when you suck them full of sand. If it is loose sand, you could blow it out with an air compressor. Use some 1 1/4" sch 80 PVC that is threaded and put it together with brass or galv couplings. Run an air hose down the side of the 1 1/4" pipe. Put 2 elbows at the bottom of the air line and drill a hole about 2" up from the bottom of the 1 1/4" pipe. Stick one of the elbows through the drilled hole to point the air up into the 1 1/4" pipe.
Now when you blow air down the air hose, it will suck sand off the bottom and blow it up the 1 1/4" pipe. An elbow at the top of the 1 1/4" pipe with a hose or another length of pipe will get it out the door. Dab the pipe around the bottom of the well until you get the sand out.