remember the incident with the 14 ft flatbottom I had? It ended up with a 4cyl ford ranger 25ft away from the ramp and about 18ft down on the bottom of the lake.
As for how big you can go, check your towing capacities first. Do you have a hitch or are you pulling off of a bumper?
how did this happen?
to make a long story short, the truck did not have a problem pulling the boat. We had just got done fishing and put the boat on the trailer. And in the process of pulling it up the ramp the truck got stuck on a lip. Keep in mind that it is a concrete ramp until the water break, then it goes to gravel at the lip. Well my friends ranger did not have the best of tires so it kept spinning trying to make it up. WE tried many different things including taking the trailer off and pushing it to the side.
We could not get it to budge, so we put the parking break on and left it in gear. Walked up the road about 1 1/2 miles to get someone to pull us out, and when we got back, all that we saw was a cooler and a tennis shoe. (these were in the bed of the truck). And then some bubbles followed by a mcdonalds hasbrown wrapper from that morning. Then we knew we were screwed! So when the wrecker came he swam out and couldn't find it so we swam down and hooked a chain to it and pulled it out....It was funny to laugh at now....Now I make note to make sure I have good tires..lol