I’ve got a single 10’ Triton snowmobile trailer I’m contemplating adding sides and a closed in front to. Getting an new enclosed trailer is not in the budget and can’t find a used 5x12 or 6x12. I really don’t want a third trailer as I also have a 4 place Aluma. My question is do you think 4 foot sides is enough to keep the road crap off sled? I won’t be able to put cover on sled. This would be bolt-on as I use trailer for quad and boat.