One way of avoiding raids is to use a different seed for each boss. It's a long way round as you will need to explore each seed for the required boss. However, you can just have the needed resources in your inventory to build a boat when you log in. I have my main base where I build, on a seed where I haven't killed any boss. I have another seed where I hang each trophy, with a very basic base that I don't care about and is close to the stones. Then if I want to have that power, I log out and into that seed, get the power and log back out and into my base building world. So, when I fought Moder, there was no chance of an event because no boss had been killed on that world. I do the same for each metal resource, so one world for copper, another for iron and so on. Some might consider it cheating and in some ways it is, but it makes life much easier.