I just bought a new sled, now I want to purchase a gps system that accepts my navionics map card. This system needs to be able to be mounted on my sled. I use the sled only to ice fish so the system has to be able to accept my card.

For a number of reasons I would recommend you look at the Garmin Rino 530 HCx. You gain accurate GPS mapping, chip capability's, FRS/GMRS radio and radio/GPS tracking of up to 50 other Rino users at the same time. I use mine year around and it is a great tool for me as a guide on land, and on the water. The unit is very easy to use. On a sled, I would go with the RAM/Garmin dash mount instead of the handle bar mount to reduce vibration, a very secure mount.

As a handy add on you may wish to add the head set VOX hands free mic. Allows for quiet, semi-private, hands-free communication. Speak and listen without holding the radio. Cuts down on background interference in noisy environments. Features external voice activation (VOX). For use with the GARMIN Rino series.

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Know exactly where you are at all times with Rino 530HCx and the precision of high-sensitivity GPS. This waterproof FRS/GMRS radio plus GPS navigator adds a barometric altimeter, electronic compass and NOAA weather radio in addition to the popular features of the Rino 520HCx (https://buy.garmin.com/shop/products/rino520hcx) — 5 watts of transmit power, a microSD card slot, brilliant color display and a high-sensitivity GPS receiver — so you’ll never be lost again.
Pinpoint Your Position

With its high-sensitivity GPS receiver, Rino 530HCx locates your position quickly and precisely and maintains its GPS location even in heavy cover and deep canyons. The advantage is clear — whether you’re in deep woods or just near tall buildings and trees, you can count on Rino 530HCx to help you find your way when you need it the most.
Find Your Friends

Like the rest of the Rino series, Rino 530HCx offers a unique Position Reporting feature. Position Reporting lets you send your exact location to other Rino users in your group so that everyone can see your position on the map page. And, because Rino is a standard FRS/GMRS radio, you can use it to communicate with any other conventional FRS/GMRS radio around.
Transmit with Power

Rino 530HCx boasts a whopping 5 watts of transmit power (GMRS), which lets you contact others from up to 14 miles away (line of sight). In Canada, you can transmit at 2 watts over GMRS with a range of up to 8 miles.
Other Rino 530HCx features:


Barometric altimeter pinpoints your precise elevation.
Electronic compass tells you what direction you’re headed, even when you're standing still.
Bold color TFT display makes it easy to see and navigate to family or friends at an amusement park, lake or other outdoor group activity.
microSD™ card slot accepts preloaded MapSource® data cards with detailed maps.
Automatic routing and turn-by-turn directions with alert tones let you find an address or point of interest and drive there (with optional MapSource map data).
Rechargeable lithium-ion battery provides up to 14 hours of outdoor use.


Link to $50 rebate for the 520 and 530HCx.

http://www8.garmin.com/whatsNew/currentpromotions/pdfs/520HCx_530HCx_rebate.pdf

I hope this is useful to you.

what unit do you have in your boat? i use the eagle 480 that i have on the bow of my boat. it works great. i did put a 5/8 piece of plywood under the hood as a backer that the ram mount is screwed into. it has lasted over 3 years now with no cracking of the hood. i also have a mount on the atv and i use it in the truck also.

I have an Ifinder attached to my dash of my sled with velcro

it accepts my Navioncs maps and is easy and simple to use

call me a basic guy lol

I have 2 lowrance 111hd on my boat, it is a little to big for my snowmachine.

the megillan sprt trak has always been good to me......can hold up to the vibration and the super cold lake superior north winds