I suspect the whisker length you used for your first build was too short. 9 to 10" is more likely to provide decent UHF and some H-VHF capability. However, unless you model the design before cutting material, you're just guessing.
If you wish to 'role your own', consider going all out... I'd suggest the GH10n3. This is the product of some extensive work with 4NEC2 modeling software and has real world examples that confirm the design.
http://clients.teksavvy.com/~nickm/g...6V9_14u65.html
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If the well is dry and you don't see rain on the horizon, you'll need to dig the hole deeper. (If the antenna can't get the job done, an amp won't fix it.)
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