I do this too. I have an old Diamondback Voyager.
As to carrying gear, I have those carrying forks on the handlebar, like in James Wrenn photo, They work for a bow, rifle or fishing pole. Also have a rack over the rear tire, which can hold a daypack and rain gear.
I plan to copy this idea next season:
I saw someone here with a 5 gallon bucket attached to each side of the rear rack on his bike as cheap panniers. When not in use, they nest together and you can put the day pack inside, and strap it to the top of the rack. When in use, they hang low and get the weight down near the road where it is easier to balance.
I think I could fit a boned out deer into game bags, and put them into the buckets. Anyway that is the plan....