Sadly I learnt the hard way years ago.
The cheapo sat finders are junk,. Our Sproket recommended this firm to me .
Satellite meters. Professional satellite meters and budget satellite meters. DVB-S2 meter. Combo S2 and T2 meter. Professional satellite finders. Satellite finder meters special offers. Primesat SF500, SF700, STF9000 PR8000 meters. Satellite finder kit, Rover satellite meter. DVB-t2
www.satellitesuperstore.com
The ones just under £100 are preloaded with various satellite codes so you can choose which one to track .. The cheapos pick up every thing and don’t tell you the identity of the one you lock onto!
We use our Sky HD plus box and similar to Clive a Maxview 65 cm elliptic on a tripod. Usually I can find the satellite within 20 seconds.