I bought the H-Crate last week and decided to share some observations for those wanting to use a Hobie cart with it.
1. I have the heavy duty cart and as you can see in the photos it puts some restrictions on what you can put in the front rod holders; basically you won't be putting rods w/ spinning reels in [not a problem for me]. A cart with bigger wheels make obstruct those rod holders more.
2. The H-Crate also limits how much your seat can recline before hitting it. I haven't had it on the water yet so not sure if this is even a real issue.. typically I fish with an inflatable life vest so it probably won't be for me.