This is impossible to answer without more facts about size and weight of the boat.
yes
they arrived by boat
not very !
the stem boat was invented in 1812 and was made to be able to go against strong currents and strong winds.
yes or no if your are towing a trailer or a boat.
they go on boat or walk they are strong walkers.
Be strong enough to lift it and throw it off the boat!
Depending on how strong you are you pick it up and into the boat. Or you could make one of those cool raft for the dog and flow it to the boat.
YES! the Athenian navy was very strong but only because they had a strong back bone. This "backbone" was their strongest and best ship the trireme. The trireme had a simple but affective job, it was to ram into the other boats with their battering ram on the bow of their boat. They would ram the same boat continuously until the other boat sank.
I am assuming this is a sail boat, ski boat (jet boat). If the boat is made by a manufacturer the the hull will be strong enough. If the boat was made privately, the hull would be laid with plywood, then fiberglassed as a sealant strengthener. If you have an outboard motor on the transom, this must be well supported by "bungs" (which are the two pads at the back of the trailer. Most of the weight should be on the center-line (keel of the boat) and the rest should also be supported by the rollers.
yes if its strong enough and it has enough gas
There are no summer roads to Lake Athabasca. To get your boat there, take highway 63 north to Fort McMurray and launch your boat on the Athabasca River. Follow the river about 250 km downstream to Lake Athabasca.