Thread: Advice for a novice and his friend

So have had a rehomed brittany for a year now, brilliant dog only problem is the owner.
Have good control around home eg heal, come, stop, etc
Have taken here bush on 4-5m lead and she put us onto deer naturally, only problem is handler again

When at park or bush she gets far to excited off lead and basically off self hunting. 100's metres away.

Can call her back and heal her etc but a only by using loud confident voice which ain't so fun.

Was wondering about either whistle or better still a vibrating collar, something like Garmin .

Stupid question time!
How does vibration whistle command work?
1 buz for stop 2 for come
Long and short?

Have tried to contract local field dog club to help burn some energy off her but no replys

Thanks in advance for anyone game to help
Novie and friend