the major rental companies do not require that you pay in advance.. you can reserve a car and the cl

You can look for discounts from the rental companies. If you are a member of the AAA, or belong to an organization that offers discounts such as alumni associations or professional associations or discount shopping clubs.
An option for collision homer alaska lodging damage coverage.. if you have an American Express card, you can enroll free in their insurance program for rental cars, and it will cost you a total of $25 for the entire 3 weeks and you get decent coverage for the car.. its not coverage for your person. Its much cheaper than the coverage given by the rental companies. and for 3 weeks its best to have coverage as you dont want to pay for any dings you may get in a parking lot.
the major rental companies do not require homer alaska lodging that you pay in advance.. you can reserve a car and the closer to your rental date you can check and see if the price drops and then reserve again and cancel the more expensive homer alaska lodging reservation.
Or, if you are flying, you could check to see if there is a good rate offered in conjunction with your airline. I got a good rate, and a lot of bonus points, by using a Southwest-affiliated car rental sale last summer.