I have a cmc pt35 on my Crappie Jon. The unit came with an on/on center off/ momentary switch. All the switch current needed is to operate a relay pair, on up and one down, or about .1 amp.
I suggest you change the rocker switch to an on/on center off momentary. The wiring should be ok to carry 100 milliamps give or take a few millies required to operate the up/down direction relays.
There are no travel limit switches that I am aware of on the lift motor that I have. It growls when it stalls with max trim up or down.
I have had no troubles with the pt35 except it ain't used enough.
PS
I also wired my remote handle trim switch so I can trim on the run. Easy to do.
Tom