Hello I just purchased my first boat- wellcraft steplift 20' with 115 merc. Now I have the dilemna of getting it home. My truck currently has a class II hitch with a 300 lb. tongue weight and I'm wondering if this will be enough. I have no idea what the boat weighs so I'm hoping someone might know or be able to give me a good estimate. The traler is a loadrite w/ single axle. Thanks