I have basically the same trailer except I went with the sport package, basically just a wooden floor and ski guides on the ramps for snowmobiles. That aluminum floor can get kinda slippery with snow on it. I considered an aluminum floor and my plan was to get 1/2” plywood and cut it to fit and be tight enough so it wouldn’t move when loading and unloading and install ski guides on each section so your carbides don’t tear up your plywood, I believe with the design of the trailer you could do this and use the rear uprights (in the corner) as the locking point of the plywood forcing it forward to lock it in, hopefully that makes sense!
In regards to the ramp, the ski guides Aluma installed on my trailer seem to work good and are not so tall that you trip on them and provide good traction when wet or snow covered. I can’t remember the brand, I think it’s X Caliber..... We use our trailer for hauling motorcycles too and the ski guides on the ramps do not seem to be an issue. I think you might be forced to go with the guides on the ramp or try to use the “Ski Boots” FunCat11 mentioned. The other thing you’ll find if you load your sleds right after riding that the snow will melt off of the heat exchangers and puddle and freeze and get really slippery, (maybe you already know this) I usually let mine drip off for 15-20 minutes before loading, I would imagine that the aluminum floor would make it hard to see the ice, just sayin!
At any rate that was my plan for my trailer before I decided to go with the wood floor!
I’m pretty happy with my Aluma trailer, going into my 3rd winter with close to 15’xxx miles on it!
Oh crap, I hate that, sideways picture crap!