I'll give you a little different perspective -- from the viewpoint of an airboat
operator at work (NOT commercial tours).
Airboat rides are sort of a quintessential Florida outdoor experience. They are a lot of fun. They're loud, fast, and they get you right down in whatever ecosystem you are visiting. Do NOT take airboats in hopes of seeing wildlife, because they scare most wildlife away.
Big boat vs. small boat -- having ridden in both as a tourist, and having driven both, I can tell you what the main difference is...and it's not what you think. The main difference is safety -- with BIG boats being much safer than small boats. Small boats are more fun to DRIVE, but the experience as a passenger is better in big boats.
The smaller the boat, the more nimble and manuverable it is. For a tourist, that's a good news - bad news thing. Small boats may bounce you around a little more; big boats give a smoother ride. But small boats can also be flipped or sunk in the blink of an eye -- especially if the driver is a hot dog. If your airboat ride is a thrill ride, you selected the wrong place.
Big boats give you a smoother ride, better safety, and the owners are not likely to entrust a big, expensive airboat to a hot dog.
Day vs. night -- Go in the daytime. Nighttime airboating can be miserable. Pros go out at night only if they have to for work purposes.
If you do go at night, DO NOT smile! Depending on where you are, you'll have to deal with clouds of knats, mosquitos, and spiders.
The only advantage to airboating at night is you will see more alligators, and might see them closer than in the daytime. Alligators hunt at night, and are much more active generally at night. But that is more than offset by the fact that you can't see anything outside the patch of light from the boat's lights. Not a good tradeoff.
Length of trip -- take a short trip. When I go out on an airboat, I'm typically gone 4-8 hours. Two hours is a short ride for us, and the minimum we do. But that's because we're working, not sightseeing.
You will get all the airboat experience you want in 30-45 minutes. On most longer commercial trips, the guide is doing nothing more than driving you around in circles (you won't know the difference).
Terrain -- the sawgrass prairies of the Everglades are the best venue for airboating, by far. Very pretty, the boat behaves better on grass, and you're in the ecosystem the machine was designed for. Lakes and rivers are okay, but except for the noise, the experience is no different from going out on the water in any other type of boat.
Safety -- you should buy and
use three things on an airboat ride:
- Eye protection -- sunglasses in the daytime, clear safety glasses or goggles at night. Eye protection is a must. For clear eye protection, Home Depot sells perfectly good clear safety goggles for about $5.
- Ear protection -- IF the airboat company provides any ear protection at all, it is likely to be cotton balls...which are NO protection at all. Most commercial airboat operations don't even make a pretext of providing ear protection. Very important, especially for kids. The little sponge ear protectors work fine, and can be purchased at any gunshop, most sporting goods stores, and probably at home supply places like Home Depot.
- Sunblock -- lay it on thick, even if you are only going for 1/2 hour. You are going to get both sun and wind burn, and sunblock will protect you from both.