I'm trying to decide between the 898 and 998. Looks like the 998 screen is about 33% larger as far as area (27.4 in^2 vs. 20.7 in^2 for the 898). Is it worth the price difference? Also, anyone have any experience with mounting the transducer on a pontoon boat? I'm thinking it would likely require two transducers, one on each side, but I'd like to avoid that if possible.

Thanks for any input.