First up need to beat the game, then go to lily cove city and buy boards.
Chat with our AI personalities
You have to buy stiff boards from the lily cove departments store sale. its shown on the TVs but it is rare. they will cover the holes and let you walk into those areas.
Unfortunately there is no TV in Ruby/Sapphire/Emerald for a secret base. Many people worldwide will be upset. :(
yes
In your secret base.
I think you should learn your pokemon strength and use it against the holes. I just think that,because alot of people say that.