Watching youtube videos I see several ways people are mounting transducers. Seen one where they mounted it on the inside and said the transducer will have no problem reading through the bottom of the kayak. Is this true? Seems like this would be the best option as it would be kept out of the way. Also see the little arms that hang over the side. For you guys that have fish finder/sonar units mounted on your kayaks for fishing how do you mount the transducer? Pics would be great too if you have some. Also what are some good options for smaller sonar units for kayaks.