200khz vs 50 khz transducer

[Frdtrtnfx4]

I need to order a new transducer for my garmin 250c fish finder. I fish only lakes with max depth of 80-100'. My qquestion is what transducer am I better off with, a 200khz or a 50khz? I am more interested in what kind of structure is at the bottom and how deep I am fishing.

[stripernut]

If you are not going to use a dual, with what you have described I would go with the 200KHZ. The 50 is better for deep water separation.
Allan