@N9KWK unless you're transmitting without touching the radio it's unlikely to make any significant difference. Some cases it will make the radio overload and effectively reduce what you can hear, especially if there are broadcast transmitters within at least 10 km from where you're operating, since often handhelds don't have adequate filtering, especially those models that operate across many frequencies.
That said, use any piece of wire clamped at the base of the antenna connector and test.