The pressure tank/switch idea is a good one, but try and keep it as small as possible. You don't want the pump cycling on and off continually as you use it, it puts more wear on the motor, and runs up the electric bill.

www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).