I know nothing about Solcats.

However, the "dolphin striker" keeps the forward crossbar from breaking. It is the rod and cable mechanism located directly under the mast step. The rod is probably attached to the mast step.

I don't use anything to help raise the mast, just "muscle". But, I'm short and stocky. I've seen taller guys who are obviously stronger, struggle a bit because they can't get under the mast. I saw a guy put a light bungee around the shrouds, but can't say that I recommend it. The safest way would be to get help raising and lowering, lots of guys do it.