xi5 is an amazing trolling motor. Been using it for 2 years and its been flawless. There are tons of posts here on IDO about it with lots of good information.
You can connect your 334 to it and use the sonar, but you will not be able to use the “Pinpoint Gateway” unless you upgrade to a newer HDS unit. Pinpoint Gateway will allow you to control the trolling motor from your GPS unit. Sweet as heck.
In lieu of that though, you have anchor mode which is far superior to the iPilot’s spotlock because it holds much tighter to the spot you lock in on. The remote will allow you to jog forward, back or left or right in 10 foot increments to fine tune once you are in anchor mode. That is a very nice feature.
Aside from that that, it has an internal GPS which will allow you to record tracks (to play back a trolling run later), it has cruise control to keep you at a set speed along with heading lock to keep you in a desired direction while compensating for wind and current.
While the xi5 remote doesn’t have a display its easy to know what’s going on with the LED indicators for heading lock, prop control, etc. Plus when you use cruise control it sets the speed at 1.0 MPH and if you use the + or – button it increases or decreases in .1 MPH increments to dial in your desired speed.
I used it a year without the Pinpoint Gateway and loved it. This past season I added the gateway with a HDS Touch unit and I LOVE it even more.
It uses over 20% LESS AMP draw at peak vs a comparable Terrova as well, which translates to longer battery life and more time on the water.