Good luck with the new purchase. With a Terramaster 7 I hit copper, zinc, azzurdite, niksarium, gold, caldorite, blausarium, petonium, and a lysterium global.
Just green text on black background, nothing fancy, biggest letters that fit so its readable from a distance. Inviting miners to OLA#41E New Switzerland.
When I did those I put longest period with lowest price possible. No need to spend alot. Comes down to something like 30 ped for 30 days.
It should help get back those who f-ed off when argo came in.
Make a good bonus and jackpot system that's understandable and transparent, and you'll get folks hunting and mining. No one in their right mind will hunt on taxed land without some extra excitement.