Dumped the pontoon, and picked up a 22/72 SeaRaider Hardtop. So, boat wise I'm ready for the Great Lakes.

We're planning to trailer the rig up to the Catawba area, and ferry the van out to the Bay via Miller Ferry Catawba Dock. I want to ramp the boat in and run it out to the island, instead of ferrying it out.

Here's my questions, and I'd appreciate the advice.
a. What ramps in the Catawab area are available, where I can ramp in the rig, and then drop the trailer and park it there till we end the trip. Is there any ramp/park area that lets you leave a trailer there for about a week, and from a security standpoint, is it safe to leave a trailer unattended that long? (22 foot Ezloader dual axle)

b. Would I be better off after ramping in the boat, to have the folks just take the trailer with them as they ferry the van out to the Island?

Thanks in advance.

HB