Some project students have been trying to see me. In order that we don’t misunderstand one another let me make it clear that I want meetings with students to be well-defined. It is even better when there is a memo stating the matters for discussion. As you do that, note the following:
1. I will not do YOUR project for you. My duty is to empower you with the theory and skills you need to model, design and analyse products. I am doing that in MCE 511 and 534. You can ask me specific questions in these courses.
2. Your project is not a welding and fabrication project. The major thing is to turn an idea into a product by creating the basis for the specifications. Any person can be taught to weld parts together in a short time. The engineer’s training is to determine the shapes and sizes based on deep knowledge of how these materials are known to react to loading: mechanical, thermal, shock, etc.
3. Simulation of simple parts in MCE 511 is the best preparation to get this done. When you neglect the examples and demos in that course and are wanting to see me; the question is: See me for what?
I am putting a number of Motorcycle trailer ideas from the web on this page. You can have a look and decide on what direction you want to move.

From Wikipedia
Bike Cargo Trailer
Camping Trailer
Scooter Trailer

The work of designing a trailer can be broken into at least two parts:
1. The Chassis, Moving Parts and Suspension System
2. Coupling and Body (This can be neatly done in sheet metal by Fusion 360)
It is either you are divided into two groups to concentrate on these or that another set join to take one aspect.
If you work in groups, you must agree on the specifications that will make the work of one group fit into the results from the other.
It is also a good idea to select what parts can be bought rather than made from scratch. There are some things that are better purchased than made for different reasons. We can discuss these ideas.
Please do not look for me. If you want a meeting, state the specific purpose as a response to this write up. I will respond and we can easily arrange a meeting. No open-ended meeting with no purpose!